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Dissertations / Theses on the topic 'Electron holes'

Author: Grafiati

Published: 29 June 2021

Last updated: 29 July 2025

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1

Ouahioune, Nedjma. "Čerenkov emission of whistler waves by electron holes." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-446395.

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Electron holes are positively charged nonlinear structures in which trapped electrons are supported by a positive electrostatic potential. These structure are regularly observed in space and laboratory plasmas by means of diverging bipolar electric field signatures. Recent observations and simulations have shown that fast moving electron holes can generate electromagnetic whistler waves via Čerenkov emission. The fast moving positive charge correspond to localised currents which can potentially excite waves. The aim of the project is to study both theoretically and numerically the properties l

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2

Zhou, Chuteng. "Computational and theoretical study of electron phase-space holes in kinetic plasma: kinematics, stability and ion coupling." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119039.

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Thesis: Ph. D. in Applied Plasma Physics, Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2018.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 181-191).<br>In this thesis, a comprehensive study of Bernstein-Greene-Kruskal (BGK) mode electron holes in a collisionless plasma where strong kinetic effects are important is presented. Kinematic theory based

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3

Reinsch, Andreas, and Andreas Reinsch. "Search for Colorful Quantum Black Holes Decaying to an Electron-Jet Final State with the ATLAS Experiment." Thesis, University of Oregon, 2012. http://hdl.handle.net/1794/12370.

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A search for quantum black holes with color charge decaying to one electron and one quark has been performed using data collected by the ATLAS Experiment at the Large Hadron Collider corresponding to 2.29 fb−1. No excess over the expected Standard Model interactions has been observed. Limits are set on the production cross section for events with one electron and one jet resulting from new physical phenomena. Models with a combined invariant mass of the electron and jet larger than or equal to 2.5TeV and a cross section above 2.6 fb are excluded at the 95% confidence level. This allows

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4

Bause, Marlon Luis. "Plasma density characteristics of magnetic holes near the Kronian magnetosphere boundary surfaces." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-414766.

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Localized structures of the magnetic field strength depression are often observed in the interplanetarymedium, and they are called ‘magnetic holes’ after the original work of Turner et al. 1977. A numberof observations of similar features have been reported, while the mechanisms of their origin have notfully understood yet. The scale size of their structures varies from several to a few thousand of the protongyro radii, and their characteristic orientations of the magnetic field also vary, and therefore differenttypes of the magnetic holes have been suggested. To date, the magnetic holes are c

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5

Petrov, Pavel. "Effect of Curvature Squared Corrections to Gravitational Action on Viscosity-to-Entropy Ratio of the Dual Gauge Theory." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10549.

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In this thesis we study the properties of strongly-coupled large-N conformal ﬁeld theories (CFT’s) using AdS/CFT correspondence. Chapter 1 serves as an introduction. In Chapter 2 we study the shear viscosity of strongly-coupled large-N conformal ﬁeld theories. We find that it is affected by \(R^2\) corrections to the AdS action and present an example of 4D theory in which the the conjectured universal lower bound on viscosity-to-entropy ratio \(\eta/s > 1/4 \pi\) is violated by 1/N corrections. This fact proves that there is no universal lower bound of \(1/4 \pi\) on viscosity-to-entropy ratio

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6

O'Regan, Brian C. "Dye sensitized n-p heterojunctions of titanium dioxide and copper thiocyanate, a new interface for photoinduced charge separation /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/8601.

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7

Zeybek, Orhan. "Surface studies of magnetic thin films." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367247.

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8

Khalal, Mehdi Abdelbaki. "Photoionisation multiple des vapeurs métalliques Multi-electron coincidence spectroscopy: Triple Auger decay of Ar 2p and 2s holes 4d -inner-shell ionization of Xe+ ions and subsequent Auger decay." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS552.

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Ce travail de thèse porte sur l’étude expérimentale des processus de photoionisation multiple de vapeurs alcalines par rayonnement synchrotron. Je me suis intéressé particulièrement à la désexcitation par déclin Auger des atomes ionisés en couche interne. Le dispositif expérimental HERMES mis au point par l’équipe est un spectromètre par temps de vol de type bouteille magnétique qui permet de détecter en coïncidence tous les électrons émis lors du processus d’ionisation (photoélectrons) et de relaxation (électrons Auger). Une partie importante de ma thèse a été consacrée à l’améliorer pour per

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9

Shao, Fangwei Dougherty Dennis A. "DNA-mediated hole and electron transport /." Diss., Pasadena, Calif. : California Institute of Technology, 2008. http://resolver.caltech.edu/CaltechETD:etd-06282007-105808.

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10

Royo, Valls Miquel. "Theoretical modelling of electrons and holes in semiconductor nanostructures." Doctoral thesis, Universitat Jaume I, 2010. http://hdl.handle.net/10803/669140.

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En esta tesis se utiliza la aproximación de masa efectiva y función envolvente para estudiar teóricamente las propiedades optoelectrónicas de una gran variedad de nanoestructuras semiconductoras, muchas de las cuales son obtenibles en un laboratorio a día de hoy. El primer capítulo de la tesis se centra en el estudio de los efectos derivados de aplicar campos magnéticos externos sobre varias nanoestructuras formadas por anillos cuánticos: dos anillos acoplados lateralmente y verticalmente, y una red periódica bidimensional de anillos. El segundo capítulo constituye la parte más extensa e impor

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11

Mampazhy, Arun S. "Composite quantum well co-existence of electrons and holes /." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/2505.

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Thesis (M.S.) -- University of Maryland, College Park, 2005.<br>Thesis research directed by: Dept. of Electrical Engineering. 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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12

Murooka, Yoshie. "Parallel electron energy loss spectroscopy of electron hole drilling in calcite." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361611.

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13

Haines, Andrew. "Electron and hole transport in silicon microstructures." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387602.

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14

Cáceres, Alejandro. "Electron dynamics in a black hole background." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614691.

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15

Pingenot, Joseph Albert Ferguson. "Electron and hole spins in quantum dots." Diss., University of Iowa, 2009. https://ir.uiowa.edu/etd/259.

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As the technology underlying modern electronics advances, it is unlikely that previous rates of power use and computational speed improvement can be maintained. Devices using the spin of an electron or hole, "spintronic" systems, can begin to address these problems, creating new devices which can be used as a continuation and augmentation of existing electronic systems. In addition, spintronic devices could make special use of coherent quantum states, making it feasible to address certain problems which are computationally intractable using classical electronic components. Unlike higher-dimens

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16

Delgado, Jorge Filipe Mónico. "Kerr black holes with electric charge and scalar hair." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17984.

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Mestrado em Física<br>A solução de Kerr [Kerr, 1963] descreve um buraco negro (BN) em rotação no vácuo em Relatividade Geral (RG). Pouco depois da sua descoberta, uma generalização electricamente carregada deste BN foi encontrada [Newman et al., 1965]. No início dos anos 70, poderosos teoremas de unicidade foram estabelecidos em RG, para o vácuo e electro-vácuo, demonstrando que estas são as soluções de BN mais gerais, fisicamente aceitávies, no vácuo ou electro-vácuo. Estas descobertas levaram a duas ideias, amplamente difundidas, mas não demonstradas: 1) BNs não têm \cabelo" [Ruffini

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17

Spink, Graham George. "Application of quantum Monte Carlo methods to homogeneous electron and electron-hole systems." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/275725.

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The properties of the macroscopic world around us, and of which we are a part, are largely determined by the low energy, collective behaviour of many interacting particles, including the nuclei and, especially, the electrons present. Although the fundamental laws governing the behaviour of these many-body systems are believed to be known in principle, the practical solution of the equations of quantum mechanics remains a challenging area of research. This thesis is concerned with the application of quantum Monte Carlo methods to two model systems: the spin-polarised homogeneous electron gas, a

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18

Eshghi, Hosein. "Electron and hole transport in GaN and InGaN." Thesis, University of Surrey, 2000. http://epubs.surrey.ac.uk/2237/.

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19

Edwards, Gerard. "Electron and hole states in low dimensional structures." Thesis, University of Exeter, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305593.

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20

Gökcan, Hüseyin. "Magnetotransport of hot electrons and holes in the spin-valve transistor." Enschede : University of Twente [Host], 2006. http://doc.utwente.nl/57119.

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21

Thangaraj, Mamta Ponammal Shanthi. "Transport measurements in two dimensional electron-hole bilayer devices." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612323.

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22

Tregurtha, David. "The transport properties of electrons and holes in a silicon quantum well." Thesis, University of Bath, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636538.

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Semiconductors have revolutionised the field of electronics due to the nature of their readily engineerable bandstructure. Additionally, the study of the 2D charge systems hosted by devices made from these materials has led to the discovery of fundamental physics of these systems. Silicon has been at the forefront of developments in this field owing to its natural abundance, ease of processing and naturally occurring oxide. In this thesis a double gated, metal oxide semiconductor field effect transistor (MOSFET) is used to investigate a number of transport properties of electrons and holes. Th

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23

Dorin, Catalina I. "Electron paramagnetic resonance and electron nuclear double resonance study of Nb⁵⁺ hole center in CdWO₄." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=745.

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Thesis (M.S.)--West Virginia University, 1999.<br>Title from document title page. Document formatted into pages; contains ix, 72 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 40).

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24

Nikolaev, Valentin. "Many-particle correlations in quasi-two-dimensional electron-hole systems." Thesis, University of Exeter, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248096.

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25

Hu, Yuan Zheng. "Theory of electron-hole pair excitations in semiconductor quantum dots." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185516.

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This dissertation considers one- and two-electron-hole-pair excitations in ideally spherical semiconductor quantum dots with infinite or finite confinement potentials. The optical absorption edge of the semiconductor micsrocrystallites is found to be higher than that in the corresponding bulk semiconductor. This blue shift is approximately proportional to 1/R², where R is the radius of the semiconductor microspheres. For small quantum dots with infinite confinement potential, the energies and wave-functions of quantum confined excitons and biexcitons are computed using a numerical matrix diago

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26

Cook, Kimberlee S. "The sensation of Sherlock Holmes." Thesis, Wichita State University, 2011. http://hdl.handle.net/10057/3947.

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This thesis examines the Sherlock Holmes stories written by Sir Arthur Conan Doyle and how they relate to the late-Victorian Sensation Novel. First, a brief introduction to the Sensation novel is made. It makes a study the character of Sherlock Holmes, his habits, and his cases to show the sensationalism of his character. It considers the setting of late-Victorian England and its connections to the world created by Conan Doyle. Finally, it takes into account the significance of Victorian class structure within the stories. All these come together to confirm that the Sherlock Holmes stories bel

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27

Zenker, Bernd [Verfasser]. "Electron-hole pair condensation at the semimetal-semiconductor transition / Bernd Zenker." Greifswald : Universitätsbibliothek Greifswald, 2014. http://d-nb.info/1051797799/34.

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28

Marlow, Thomas Peter. "Far-infrared studies of coupled two-dimensional electron and hole gases." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621528.

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29

Benini, Gabriella. "Studio di celle solari innovative basate su "multiple electron-hole generation"." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8936/.

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L’aumento dei consumi energetici e la sempre maggiore attenzione posta al tema ambientale fanno delle energie alternative una valida alternativa alle fonti , quali carbone e petrolio,che presentano una elevata generazione di gas serra . Tra le varie fonti alternative di energia un ruolo preponderante è stato assunto dal solare fotovoltaico, che dagli anni ’80 ad oggi ha conosciuto un rapido sviluppo sia in termini di ricerca che di utilizzo su larga scala. Negli ultimi anni tutti gli studi si stanno concentrando su un nuovo tipo di fotovoltaico, quello di terza generazione , il c

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30

Scott, Donald Christopher. "Carrier relaxation and collective phenomena in nonequilibrium semiconductor electron-hole plasmas." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186556.

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A quantitative analysis of carrier-carrier scattering for electron-hole semiconductor plasmas is presented. Material parameters appropriate for GaAs are used for all calculations. Calculations are performed using the Boltzmann equation for carrier-carrier scattering. Screening of the Coulomb potential is treated in the fully-dynamical random phase approximation. Results are shown for roomtemperature near-equilibrium and far-from-equilibrium plasmas. Also, the equilibrium zero momentum scattering rates are calculated as a function of temperature (T = 10K to T = 1000K) and density (n = 10¹⁵ cm⁻³

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31

Lee, Robert 1962. "Electromagnetic coupling by a wire penetrating a circular aperture in an infinite planar conducting screen." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276731.

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We consider the problem of electromagnetic propagation along a wire which passes through an aperture. We begin by formulating an integral equation in terms of the electric field at the aperture. The solution of the integral equation allows us to determine parameters of interest such as the equivalent admittance, the current on the wire, and the electric field. We solve the integral equation using both a zeroth order and method of moments approximation for the aperture field. From this we are able to compute the admittance and current in the frequency domain. We next calculate the current respo

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32

Wright, Diana Beth 1963. "Electromagnetic coupling by a wire through a cavity-backed circular aperture in an infinite screen." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276823.

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The problem of a wire penetrating a circular aperture in an infinite screen and coupling energy into a cavity behind that screen is considered. We formulate an integral equation in terms of the electric field in the aperture. This integral equation is solved using two approximate methods: a zeroth-order approximation valid at low frequencies, and the method of moments. In addition, we introduce an equivalent circuit model to aid in our physical interpretation of the problem. Numerical results for the interior current on the wire and for the equivalent circuit admittance parameters are presente

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33

Ishitani, Yoshhiro. "Transition processes of electorons and holes in AlGaInP crystals studied by spectroscopic measurements." Kyoto University, 1999. http://hdl.handle.net/2433/77924.

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34

Vampa, Giulio. "Role of Electron-Hole Recollisions in High Harmonic Generation from Bulk Crystals." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34935.

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When intense laser pulses interact with an atomic or solid target, high order harmonics of the fundamental laser frequency are generated. In the case of atoms, this highly nonlinear optical process is initiated by ionization and terminated by the energetic recollision and recombination of the ionized electron with its correlated ion. In this thesis I demonstrate, both theoretically and experimentally, that high harmonics from bulk crystals can originate from the recollision of electrons with their associated holes, similarly to the atomic case, but where ionization is replaced by excitati

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35

Wu, Zhenping, and 吴真平. "Studies on thin films and heterojunctions of electron/hole-doped perovskite manganites." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49799307.

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Intensive research interests in condensed matter physics have been focused at the strongly correlated electron systems. Most of the efforts were devoted in hole-doped manganites with a double exchange interaction between Mn3+/Mn4+. Recently, tetravalent ions substitution has also stimuli much attention as a supplement for the hole-doping. Such electron-doped manganites may be of great potential for the development of all-manganites devices. Manganites are extremely sensitive to external disturbances, such as magnetic fields, electric fields, currents, mechanical strain, and photo illumination

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36

Martin, Patrick Michael. "Magnetospectroscopy of electron and hole tunnelling in (AlGa) as resonant tunnelling structures." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363614.

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37

Brosh, Boaz. "Transport properties of electron and hole gases in weakly 1D modulated potentials." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624174.

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38

Mejergren, Henrik. "Multipoint Measurements of Magnetic Holes in the Pristine Solar Wind." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290371.

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Satellite data from the Cluster satellites have been used to find and evaluate structures in the pristine solar wind, referred to as magnetic holes. By using multipoint measurements, size and orientation-estimates are established. Other characteristics of interest are also examined, such as velocity, temperature, density, and pressure. The results show that the magnetic holes vary in both shape and size, but with a median difference between the minor and major axis by a factor of five. Most of the events also show increases in both density and ion temperature compared to background values. Com

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39

Javed, Rehman Yasin. "Processing and magneto-transport studies of InAs/GaSb low dimensional structures." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343523.

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40

Galaktionov, Evgeniy A. "Transport and thermodynamic properties of low-density two-dimensional electron and hole systems." Thesis, University of Exeter, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439126.

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41

Keogh, James Andrew Christian. "Fabrication and measurement of closely-spaced electron-hole bilayers in GaAs/AlGaAs heterostructures." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615273.

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42

OLBRIGHT, GREGORY RICHARD. "FEMTOSECOND DYNAMICS AND NONLINEAR EFFECTS OF ELECTRON-HOLE PLASMA IN SEMICONDUCTOR DOPED GLASSES." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184091.

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The following is a comprehensive study of transient and steady-state nonlinear optical properties of semiconductor microcrystals embedded in a glass matrix (semiconductor doped glass). Transient thermal effects which give rise to longitudinal excitation discontinuities (i.e., kinks) that arise from partial sample switching in increasing absorption optical bistability are observed in a doped glass. The transient thermal effects occur on time scales of a few hundred milliseconds. Femtosecond and nanosecond laser pulses are employed to measure time-resolved and steady-state transmission and diffe

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43

Raghavan, Bharadwaj Veera. "Stress concentrations due to countersunk holes in adhesively bonded bi-layered aluminum subjected to tensile loading." Thesis, Wichita State University, 2011. http://hdl.handle.net/10057/5027.

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The adhesively bonded layered aluminum is used in aircraft structures to avoid knife edge situations when flush head fasteners are used with minimum gage skins. Due to the countersunk hole and adhesive bonding, stress flow becomes more complicated. Extensive knowledge of the different parameters that affect the behavior of the bonded joints with countersunk holes is essential for dependable and effective design. A 3-D finite element model was used to estimate the location and magnitude of stress concentration under remote tension for the aforementioned problem. The influence of the various par

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44

Pattanasattayavong, Pichaya. "Solution-processable hole-transporting inorganic semiconductors for electronic applications." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/24775.

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This thesis presents the development of solution-processable hole-transporting inorganic semiconductors for electronic applications. As the improvement of electron-transporting oxides, such as ZnO, In2O3, and SnO2, has continued to advance, the progress on the hole-transporting counterparts is still largely lagging behind. Copper(I) oxide (Cu2O) is one of a handful oxide materials that shows hole transport. This thesis shows the first demonstration of p-channel TFTs from Cu2O thin films processed from the spray pyrolysis technique. The field-effect hole mobility (μ_FE) is in the range of 10^-4

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45

Moeketsi, Daniel Mojalefa. "Modelling of galactic and jovian electrons in the heliosphere / Daniel M. Moeketsi." Thesis, North-West University, 2004. http://hdl.handle.net/10394/194.

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A three-dimensional (3D) steady-state electron modulation model based on Parker (1965) transport equation is applied to study the modelling of – 7 MeV galactic and Jovian electrons in the inner heliosphere. The latter is produced within Jupiter's magnetosphere which is situated at - 5 AU in the ecliptic plane. The heliospheric propagation of these particles is mainly described by the heliospheric diffusion tensor. Some elements of the tensor, such as the diffusion coefficient in the azimuthal direction, which were neglected in the previous two-dimensional modulation studies are investigated t

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46

Stenta, Caterina. "Novel electron acceptors and new solution processed hole blocking layer for organic solar cells." Doctoral thesis, Universitat Rovira i Virgili, 2019. http://hdl.handle.net/10803/667292.

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La utilització de materials orgànics per a la fabricació de cèl·lules solars és una de les alternatives considerades actualment per a reduir els costos de fabricació de sistemes fotovoltaics. Els materials orgànics tenen coeficients d’absorció elevats que permeten la utilització de capes primes i tècniques de fabricació de baix cost. L’objectiu d’aquesta tesi ha estat contribuir a la millora de les cèl·lules solars orgàniques d’heterounió massiva, mitjançant la incorporació de nous materials acceptors i donadors d’electrons, així com de capes de blocatge de forats depositades a partir de sol

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47

Hazama, Yuji. "Excitonic fine structure and nonequilibrium phase transition of the electron-hole system in diamond." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199093.

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48

Sakhel, Roger Raji. "Laser-induced electron-hole correlations in a quantum dot with an internal tunneling barrier /." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486462702465019.

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49

Barceló, Gisbert Irene. "Study of different electron and hole transporting materials for quantum dot-sensitized solar cells." Doctoral thesis, Universidad de Alicante, 2015. http://hdl.handle.net/10045/50105.

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El Sol proporciona a la Tierra una enorme cantidad de energía limpia. Sin embargo, para que la energía solar represente una parte importante del sistema energético mundial, se necesitan dispositivos fotovoltaicos más económicos y eficientes que los que se utilizan actualmente. Recientemente ha aparecido un nuevo diseño de célula solar, la célula solar sensibilizada de puntos cuánticos (cuyas siglas en inglés son QDSSCs), capaz de sobrepasar teóricamente el límite de Shockley-Queisser (al cual obedecen las células de primera y segunda generación). Sin embargo, el rendimiento de estos dispositiv

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50

Liu, Shuhao. "Electronic Transport in Functional Materials and Two-Dimensional Hole System." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1522893320666086.

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