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Dissertations / Theses on the topic 'Condensed matter physics'

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1

Skorobogatiy, Maksim 1974. "Numerical methods in condensed matter physics." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/82756.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.<br>Includes bibliographical references (leaves 62-63).<br>by Maksim A. Skorobogatiy.<br>M.Eng.
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2

Moussavi-Madani, Mahmoud. "Positron interactions in condensed matter." Thesis, Royal Holloway, University of London, 1987. http://repository.royalholloway.ac.uk/items/78c4cb98-6511-4083-8827-9172a34368aa/1/.

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Positron annihilation has been studied in a number of solids, and at some condensed monolayer surfaces. The bulk specimens, which included cadmium, tin, selenium, and graphite, yielded information on lattice defects and phase transitions. Two dimensional layers of condensed gases, including argon, nitrogen, oxygen and helium result in positronium formation suggesting the existence of positron surface traps. The Doppler broadening method has been applied to these studies. The 511-Kev Gamma-rays resulting from the annihilation of positrons with electrons was detected by a Germanium detector with
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3

Morris, Andrew James. "A stochastic approach to condensed matter physics." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608498.

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4

Gentle, Simon Adam. "Holography, black holes and condensed matter physics." Thesis, Durham University, 2013. http://etheses.dur.ac.uk/7286/.

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In this thesis we employ holographic techniques to explore strongly-coupled quantum field theories at non-zero temperature and density. First we consider a state dual to a charged black hole with planar horizon and compute retarded Green's functions for conserved currents in the shear channel. We demonstrate the intricate motion of their poles and stress the importance of the residues at the poles beyond the hydrodynamic regime. We then explore the collective excitations of holographic quantum liquids arising on D3/D5 and D3/D7 brane intersections as a function of temperature and magnetic fiel
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5

Yang, Xu. "Symmetry and topology in condensed matter physics:." Thesis, Boston College, 2021. http://hdl.handle.net/2345/bc-ir:109160.

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Thesis advisor: Ying Ran<br>Recently there has been a surging interest in the topological phases of matter, including the symmetry-protected topological phases, symmetry-enriched topological phases, and topological semimetals. This thesis is aiming at finding new ways of searching and probing these topological phases of matter in order to deepen our understanding of them. The body of the thesis consists of three parts. In the first part, we study the search of filling-enforced topological phases of matter in materials. It shows the existence of symmetry-protected topological phases enforced by
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6

Zonzo, Giuseppe. "Quantum Information Theory in Condensed Matter Physics." Doctoral thesis, Universita degli studi di Salerno, 2017. http://hdl.handle.net/10556/2625.

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2015 - 2016<br>Inthe“standard”Gizburg-Landauapproach,aphasetransitionisintimately connected to a local order parameter, that spontaneously breaks some symmetries. In addition to the “traditional” symmetry-breaking ordered phases, a complex quantum system exhibits exotic phases, without classical counterpart, that can be described, for example, by introducing non-local order parameters that preserve symmetries. In this scenario, this thesis aims to shed light on open problems, such as the localdistinguishabilitybetweengroundstatesofasymmetry-breakingordered phase and the classification of one di
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7

Duki, Solomon Fekade. "Topics in Hard and Soft Condensed Matter Physics." Case Western Reserve University School of Graduate Studies / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1232737384.

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8

Mosconi, Paola. "Ghost Models in Two-Dimensional Condensed Matter Physics." Doctoral thesis, SISSA, 2003. http://hdl.handle.net/20.500.11767/4205.

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This thesis is devoted to the study of ghost theories out of the critical point, in two dimensions. The first chapter offers a bird's eye view of the most important applications of ghosts to condensed matter physics. After a brief exposition of the basic (and less basic) facts concerning ghosts at the critical point, an outline of the non-perturbative methods, used in Part I and Part II, is furnished. Essentially, they rely on the so-called integrable approach, which is based on the possibility of describing all the states of an integrable quantum field theory in terms of pseudo-particle
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9

Daniilidis, Nikolaos. "Experimental studies of the Bragg Glass transition in niobium." View abstract/electronic edition; access limited to Brown University users, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3318303.

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10

Smith, Gregory J. "Application of Attosecond Techniques to Condensed Matter Systems." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1608496995249541.

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11

Pike, Nicholas A. "Energy Dispersion, Magnetism, and Transport in Three Condensed Matter Systems." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1417604062.

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12

Banerjee, Anand. "Studies of complex systems in condensed matter physics and economics." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/8857.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2008.<br>Thesis research directed by: Dept. of Physics. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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13

Rao, K. Umar. "Positron interactions at low-dimensional condensed surfaces." Thesis, Royal Holloway, University of London, 1988. http://repository.royalholloway.ac.uk/items/9042f7f2-0cb6-4d26-90ff-957fe870187a/1/.

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A microprocessor control system for automatic data acquisition in a photon spectroscopy system was developed. The control process performed Doppler broadening measurements over the temperature range 4.2-600K with simultaneous recording when necessary of pressure. After work on the chalcogenide semiconductor (Pb,Ge)Te, Doppler broadening studies concentrated on the phenomenon of gas condensation on cooled graphite substrates. This class of adsorbent, of proven homogeneity was found ideal to explore the interaction of positrons at surfaces. By measurement of positronium, adlayer formation of met
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14

Liu, Wensheng. "Applications of effective field theory to condensed matter /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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15

Bowles, Cameron M. A. "Pushing the boundaries of condensed matter electron momentum spectroscopy /." View thesis entry in Australian Digital Theses Program, 2008. http://thesis.anu.edu.au/public/adt-ANU20080409.193948/index.html.

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16

Woo, Jung Min. "Two mathematical problems in disordered systems." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/289124.

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Two mathematical problems in disordered systems are studied: geodesics in first-passage percolation and conductivity of random resistor networks. In first-passage percolation, we consider a translation-invariant ergodic family {t(b): b bond of Z²} of nonnegative random variables, where t(b) represent bond passage times. Geodesics are paths in Z², infinite in both directions, each of whose finite segments is time-minimizing. We prove part of the conjecture that geodesics do not exist in any fixed half-plane and that they have to intersect all straight lines with rational slopes. In random resi
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17

Arias, Tomas A. "New analytic and computational techniques for finite temperature condensed matter systems." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/13158.

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18

Wang, Chunhua. "Novel applications of micro-reflectance difference spectroscopy in condensed matter physics /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202009%20WANG.

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19

Prentice, Joseph Charles Alfred. "Investigating anharmonic effects in condensed matter systems." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275467.

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This thesis presents work done on the calculation of the effects of anharmonic nuclear motion on the properties of solid materials from first principles. Such anharmonic effects can be significant in many cases. A vibrational self-consistent field (VSCF) method is used as the basis for these calculations, which is then improved and applied to a variety of solid state systems. Firstly, work done to improve the efficiency of the VSCF method is presented. The standard VSCF method involves using density functional theory (DFT) to map the Born-Oppenheimer (BO) energy surface that the nuclei move in
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20

Green, Timothy Frederick Goldie. "Prediction of NMR J-coupling in condensed matter." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:39ee4a7c-58f9-49fa-b14c-16bc03141e53.

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Nuclear magnetic resonance (NMR) is a popular spectroscopic method and has widespread use in many fields. Recent developments in solid-state NMR have increased interest in experiment and, alongside simultaneous developments in computational theory, have led to the field dubbed 'NMR crystallography.' This is a suite of methodologies, complementing the capabilities of other crystallographic methods in the determination of atomic structure, especially when large crystals cannot be made and when exploring materials with phenomena such as compositional, positional and dynamic disorder. NMR J-coupli
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21

De, Silva Theja Nilantha. "Spin-Orbital Physics in Transition Metal Oxides." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1092948911.

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22

Babadi, Mehrtash. "Non-equilibrium dynamics of artificial quantum matter." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:11114.

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The rapid progress of the field of ultracold atoms during the past two decades has set new milestones in our control over matter. By cooling dilute atomic gases and molecules to nano-Kelvin temperatures, novel quantum mechanical states of matter can be realized and studied on a table-top experimental setup while bulk matter can be tailored to faithfully simulate abstract theoretical models. Two of such models which have witnessed significant experimental and theoretical attention are (1) the two-component Fermi gas with resonant $s$-wave interactions, and (2) the single-component Fermi gas wit
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23

Reed, Evan J. (Evan John) 1976. "Optical, electronic, and dynamical phenomena in the shock compression of condensed matter." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/16935.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2003.<br>Includes bibliographical references (leaves 109-113).<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Despite the study of shock wave compression of condensed matter for over 100 years, scant progress has been made in understanding the microscopic details. This thesis explores microscopic phenomena in shock compression of condensed matter including electronic excitations at the shock front, a new dynamical fo
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24

Baggioli, Matteo. "Gravity, holography and applications to condensed matter." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/395205.

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Los sistemas fisicos fuertemente acoplados, junto a sus correspondientes y por lo general exoticas caracteristicas, son imposibles de tratar mediante los enfoques perturbativos convencionales que en estos casos no son capaces de proporcionar una herramienta controlable y robusta. Sin embargo, los efectos no perturbativos y fenomenos fuertemente correlacionados abundan en la fisica, especialmente en la Fisica de la Materia Condensada. La correspondencia AdS / CFT, que nace de el estimulo de las ideas y esfuerzos empleados en descubrir una posible descripcion de la gravedad cuantica, proporcio
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25

Berger, Jill Diane 1970. "Physics of semiconductor microcavities." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/289500.

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Semiconductor microcavities have emerged to present abundant opportunities for both device applications and basic quantum optics studies. Here we investigate several aspects of the cw and ultrafast optical response of semiconductor quantum well microcavities. The interaction of a high-finesse semiconductor microcavity mode with a quantum well (QW) exciton leads to normal mode coupling (NMC), where a periodic energy exchange develops between exciton and photon states, appearing as a double peak in the cavity transmission spectrum and a beating in the time resolved signal. The nonlinear saturati
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26

Zhu, Kai Schiff Eric A. "Interface modulation spectroscopy and doping physics in amorphous silicon." Related Electronic Resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2003. http://wwwlib.umi.com/cr/syr/main.

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27

Palmer, Carl. "A non-integer dimensional space approach to confinement in condensed matter physics." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430808.

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28

Yi, Sang Wook. "How to model macroscopic worlds : towards the philosophy of condensed matter physics." Thesis, London School of Economics and Political Science (University of London), 2001. http://etheses.lse.ac.uk/1658/.

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Condensed matter physics studies many-body phenomena, the phenomena involving a huge number of constituents interacting with each other strongly. My theme is modelling in condensed matter physics: the construction of mathematical/physical structures in order to understand many-body phenomena in the world. I study how condensed matter physicists learn about many-body phenomena from the successful employment of models. My proposal is to construe condensed matter physics as engaged essentially with the three activities: model-building, model-exploring and model-based understanding. General theori
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29

Schütte-Engel, Jan [Verfasser]. "Axion direct detection in particle and condensed matter physics / Jan Schütte-Engel." Hamburg : Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky, 2020. http://d-nb.info/1228537739/34.

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30

Segall, Darren Eric 1970. "Coarse-graining electronic behavior in condensed matter systems : from electrons to continuum elasticity." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/29307.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2002.<br>Includes bibliographical references (leaves 131-137).<br>In this thesis properties of various condensed matter systems are studied, whose dependency on electronic behavior is incorporated through coarse-grained interactions. Three specific systems are considered. In the first system of study, high momentum, plane wave states of the electronic wave function are coarse-grained, while the low momentum states are fully resolved. Moreover, the coarse-graining procedure incorporates the response of the high momentum s
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31

Manning, Lane Wright. "Excitonic States in Crystalline Organic Semiconductors: A Condensed Matter Approach." ScholarWorks @ UVM, 2016. http://scholarworks.uvm.edu/graddis/571.

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In this work, a new condensed matter approach to the study of excitons based on crystalline thin films of the organic molecule phthalocyanine is introduced. The premise is inspired by a wealth of studies in inorganic semiconductor ternary alloys (such as AlGaN, InGaN, SiGe) where tuning compositional disorder can result in exciton localization by alloy potential fluctuations. Comprehensive absorption, luminescence, linear dichroism and electron radiative lifetime studies were performed on both pure and alloy samples of metal-free octabutoxy-phthalocyanine and transition metal octabutoxy-phthal
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32

Xu, Chen. "Advanced Topographic Characterization of Variously Prepared Niobium Surfaces and Linkage to RF Losses." W&M ScholarWorks, 2013. https://scholarworks.wm.edu/etd/1539623621.

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Superconducting radio frequency (SRF) technology is widely adopted in particle accelerators. The shallow penetration (∼ 40 nm) of the RF into superconducting niobium lends great importance to SRF cavity interior surface chemistry and topography. These in turn are strongly influenced by the chemical etching "surface clean-up" that follows fabrication.;The principal surface smoothing methods are buffered chemical polish (BCP) and electropolish (EP). The resulting topography is characterized by atomic force microscopy (AFM). The power spectral density (PSD) of AFM data provides a more thorough de
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33

Kim, Christopher S. "Electronic Transport of Thin Crystals in Ruthenium Chloride." Thesis, California State University, Long Beach, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10606631.

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<p> <i>Ruthenium chloride</i> (RuCl<sub>3</sub>) is a 4d halide and relativistic Mott insulator where <i>Ruthenium</i> atoms form a honeycomb lattice. Electronic interactions and spin-orbit coupling work together to give RuCl<sub>3</sub> its insulating behavior. This brings forth exciting physics predicted in the frame of the Kitaev model including exotic ground states like zigzag ordering and quantum spin liquids. We prepared samples for experiments that aim to test for these exotic states. Nanofabrication techniques such as mechanical exfoliation, electron beam lithography, and thin film dep
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34

Putzig, Elias. "An Exploration of the Phases and Structure Formation in Active Nematic Materials Using an Overdamped Continuum Theory." Thesis, Brandeis University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10620560.

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<p> Active nematics are a class of nonequilibrium systems which have received much attention in the form of continuum models in recent years. For the dense, highly ordered case which is of particular interest, these models focus almost exclusively on suspensions of active particles in which the flow of the medium plays a key role in the dynamical equations. Many active nematics, however, reside at an interface or on a surface where friction excludes the effects of long-range flow. In the following pages we shall construct a general model which describes these systems with overdamped dynamical
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35

Getachew, Yonas. "Constructing Realistic Real-Space Potentials on the Haldane Sphere for the Fractional Quantum Hall Effect." Thesis, California State University, Long Beach, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10636101.

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<p> A two-dimensional electron system exposed to a strong perpendicular magnetic field at low temperatures (usually below one Kelvin) forms a new state of matter that exhibits the fractional quantum Hall effect. This phenomenon has been observed in graphene, a naturally occurring two-dimensional electron system. The theoretical understanding of the FQHE in graphene is complicated by the fact the electrons have valley and spin degrees of freedom. As a result, the different single-particle energy levels (Landau levels) of the electrons can mix with each other. This Landau level mixing is intrins
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36

Chess, Jordan J. "Mapping Topological Magnetization and Magnetic Skyrmions." Thesis, University of Oregon, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10684160.

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<p> A 2014 study by the US Department of Energy conducted at Lawrence Berkeley National Laboratory estimated that U.S. data centers consumed 70 billion kWh of electricity. This represents about 1.8% of the total U.S. electricity consumption. Putting this in perspective 70 billion kWh of electricity is the equivalent of roughly 8 big nuclear reactors, or around double the nation's solar panel output. Developing new memory technologies capable of reducing this power consumption would be greatly beneficial as our demand for connectivity increases in the future. One newly emerging candidate for an
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37

Arik, Mumtaz Murat. "Infrared and Visible Magneto Optical Studies of Large Area Monolayer Transition Metal Dichalcogenides." Thesis, State University of New York at Buffalo, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13427593.

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<p> This Dissertation presents the magneto-optical properties of monolayer (ML) transition metal dichalcogenide (TMDC) materials using our several magneto-optical setups that were developed at UB. In this Dissertation, we discuss a magneto-photoluminescence (PL) setup, a broadband magneto-FTIR setup, and a two-color spectroscopy setup in detail. We also discuss the double modulation technique, which we use in two-color spectroscopy. </p><p> The primary results of this work include magneto-PL measurements of ML WSe<sub>2</sub> on YIG. We pump these materials with circularly polarized light an
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38

Zhong, Shudan. "Linear and Nonlinear Electromagnetic Responses in Topological Semimetals." Thesis, University of California, Berkeley, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13421373.

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<p>The topological consequences of time reversal symmetry breaking in two dimensional electronic systems have been a focus of interest since the discovery of the quantum Hall effects. Similarly interesting phenomena arise from breaking inversion symmetry in three dimensional systems. For example, in Dirac and Weyl semimetals the inversion symmetry breaking allows for non-trivial topological states that contain symmetry-protected pairs of chiral gapless fermions. This thesis presents our work on the linear and nonlinear electromagnetic responses in topological semimetals using both a semiclassi
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De, Alba Roberto. "Nonlinear mechanics of graphene membranes and related systems." Thesis, Cornell University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10254091.

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<p> Micro- and nano-mechanical resonators with low mass and high vibrational frequency are often studied for applications in mass and force detection where they can offer unparalleled precision. They are also excellent systems with which to study nonlinear phenomena and fundamental physics due to the numerous routes through which they can couple to each other or to external systems. </p><p> In this work we study the structural, thermal, and nonlinear properties of various micro-mechanical systems. First, we present a study of graphene-coated silicon nitride membranes; the resulting devices d
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40

Yu, Sisheng. "Spin Dynamics in Antiferromagnetic Heterostructures." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1586599000240225.

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41

Li, Cheng. "Engineering High Dimensional Topological Matters in Quantum Gases." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1585827770946136.

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42

Turiv, Taras. "Dynamics of living and inanimate microparticles controlled by nematic liquid crystals." Kent State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=kent159573195014515.

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43

Kumar, Arvind Shankar Shankar. "Investigating Electron-Electron Interactions in 2D Semiconductor Systems through Quantum Transport." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1624475904980951.

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44

Matis, Bernard Richard. "Electron Transport in GaAs Quantum Dots under High Frequencies." Diss., Temple University Libraries, 2011. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/107155.

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Physics<br>Ph.D.<br>This thesis explores transport properties of lateral, gate defined quantum dots in GaAs/AlGaAs heterostructures. The term "quantum dot" as defined in this thesis refers to small regions of charge carriers within a 2-dimensional electron gas (2DEG), established via electrically biased surface gates used to isolate the charge carriers from the rest of the 2DEG, which are confined to lengths scales on the order of nanometers. Several other forms of quantum dots exist in the research community, including colloidal and self-assembled dots. In this thesis, however, we consider on
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45

Knotts, Grant. "The Use of Ferroelectrics and Dipeptides as Insulators in Organic Field-Effect Transistor Devices." Thesis, University of Missouri - Columbia, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10629013.

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<p> While the electrical transport characteristics of organic electronic devices are generally inferior to their inorganic counterparts, organic materials offer many advantages over inorganics. The materials used in organic devices can often be deposited using cheap and simple processing techniques such as spincoating, inkjet printing, or roll-to-roll processing; allow for large-scale, flexible devices; and can have the added benefits of being transparent or biodegradable.</p><p> In this manuscript, we examine the role of solvents in the performance of pentacene-based devices using the ferro
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46

Greer, Allan J. Jr. "Low internal magnetic fields in anisotropic superconductors." W&M ScholarWorks, 1994. https://scholarworks.wm.edu/etd/1539623852.

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This thesis is a theoretical, numerical study of the magnetic fields which exist in the anisotropic, high temperature superconductors like $YBa\sb2Cu\sb3O\sb{7-\delta}$, or YBCO for short, using both the anisotropic London theory and simulations based on existing muon spin rotation techniques. The thesis first describes the muon spin rotation ($\mu$SR) techniques, and then gives a brief discussion of superconductivity with regard to the London theory of anisotropic, type II superconductors. Next, numerical results of the application of this theory to YBCO are presented. Three dimensional surfa
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47

Zhang, Bo. "Quantum turbulence in two dimensional Bose-Einstein condensates." W&M ScholarWorks, 2011. https://scholarworks.wm.edu/etd/1539623584.

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We examine the energy cascades and quantum vortex structures in two-dimensional quantum turbulence through a special unitary time evolution algorithm. An early attempt at using the Lattice Boltzmann Method proved successful in correctly representing some features of the Nonlinear Schrodinger System (NLS), such as the phase shift following the one-dimensional soliton-soliton collision, as well as the two-dimentional modulation instability. However, to accurately evaluate NLS, the implicit Euler method is required to resolve the time evolution, which is computationally expensive. A more accurate
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48

Riske, Karin do Amaral. "Propriedades Estruturais de Dispersões Lipídicas Carregadas de Dimiristoil Fosfatidilglicerol: Variações com a Temperatura e Força Iônica do Meio." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/43/43133/tde-05082013-145648/.

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A dependência com a temperatura da intensidade de luz espalhada por dispersões aquosas do lipídio aniônico DMPG (dimiristoil fosfatidilglicerol) foi estudada para diferentes forças iônicas. A transição principal, gel - líquido cristal, pode ser bem monitorada por um decréscimo abrupto na turbidez. Como esperado, a temperatura da transição de fase principal (Tm) aumenta com o aumento da força iônica. Para baixa força iônica, uma segunda transição com a temperatura para o DMPG, chamada de pós-transição, pode ser monitorada tanto por um aumento no espalhamento de luz quanto por um decréscimo na c
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49

Yao, Jian Hua. "Theory of Ostwald ripening." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39401.

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This thesis presents a theoretical approach to Ostwald ripening of droplets in arbitrary dimensions. A mean-field theory is constructed to incorporate screening effects among the competing droplets. The mean-field equations are solved to all orders in the volume fraction to provide analytic expressions for the coarsening rate, the droplet distribution function, and the time-dependent droplet number. These results are in agreement with experiments in three-dimension and with very large scale and extensive numerical studies in both two and three dimensions undertaken in this thesis. The numerica
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Soga, K. Geoffrey (Kenneth Geoffrey). "Equilibrium phase separation in polymer brushes." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40445.

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Abstract:
The equilibrium properties of polymers end-grafted to an impenetrable interface, the "polymer brush", are investigated. Relevant concepts and techniques of statistical polymer physics are discussed; in particular, a simulation technique that is very efficient for studying polymer brushes is introduced. This technique is demonstrated through simulations of a well characterized polymer brush system. The results of original investigations of phase separation in polymer brushes are also presented. An instability in the lateral monomer density of a polymer brush is observed under sufficiently poor
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