Dissertations / Theses on the topic 'GaAs(110)'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 27 dissertations / theses for your research on the topic 'GaAs(110).'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Oertel, Stefan [Verfasser]. "Spindynamik in GaAs und (110)-GaAs-Heterostrukturen / Stefan Oertel." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2012. http://d-nb.info/1023627876/34.
Full textTilley, Frederick Joseph. "Theory of isolated dopants in GaAs (110) surfaces." Thesis, University of Leicester, 2016. http://hdl.handle.net/2381/37763.
Full text凌志聰 and Chi-chung Francis Ling. "Positron beam studies of the metal-GaAs (110) interface." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31211689.
Full textLing, Chi-chung Francis. "Positron beam studies of the metal-GaAs (110) interface /." [Hong Kong : University of Hong Kong], 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13781443.
Full textJunior, Odilon Divino Damasceno Couto. "Acoustically induced spin transport in (110) GaAs quantum wells." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15852.
Full textIn this work, we employ surface acoustic waves (SAWs) to transport and manipulate optically generated spin ensembles in (110) GaAs quantum wells (QWs). The strong carrier confinement into the SAW piezoelectric potential allows for the transport of spin-polarized carrier packets along well-defined channels with the propagation velocity of the acoustic wave. In this way, spin transport over distances exceeding 60 microns is achieved, corresponding to spin lifetimes longer than 20 ns. The demonstration of such extremely long spin lifetimes is enabled by three main factors: (i) Suppression of the D''yakonov-Perel'' spin relaxation mechanism for z-oriented spins in (110) III-V QWs; (ii) Suppression of the Bir-Aronov-Pikus spin relaxation mechanism caused by the type-II SAW piezoelectric potential; (iii) Suppression of spin relaxation induced by the mesoscopic carrier confinement into narrow stripes along the SAW wave front direction. A spin transport anisotropy under external magnetic fields (Bext) is demonstrated for the first time. Employing the well-defined average carrier momentum impinged by the SAW, we analyze the spin dephasing dynamics during transport along the [001] and [1-10] in-plane directions. For transport along [001], fluctuations of the internal magnetic field (Bint), which arises from the spin-orbit interaction associated with the bulk inversion asymmetry of the crystal, lead to decoherence within 2 ns as the spins precess around Bext. In contrast, for transport along the [1-10] direction, the z-component of the spin polarization is maintained for times one order of magnitude longer due to the non-zero average value of Bint. The dephasing anisotropy between the two directions is fully understood in terms of the dependence of the spin-orbit coupling on carrier momentum direction, as predicted by the D''yakonov-Perel'' mechanism for the (110) system.
Wan, Qian. "Transmission electron microscopy study of heterostructures grown on GaAs (110)." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2014. http://dx.doi.org/10.18452/16949.
Full textIn the work, we systematically investigate the microstructural properties of (110) oriented heterostructures on GaAs substrates by means of different transmission electron microscopy techniques. Fcc-type (Al,Ga)As/AlAs/GaAs multilayer structure on GaAs (110) presents different mismatch strain accommodation mechanisms along the perpendicular in-plane directions. Defect-free structures are successfully acquired by an appropriate type of AlAs/GaAs short period superlattice. Finally, artificial defects are intentionally produced by nano-indentation to the defect-free sample to verify the effect of short period superlattices. Hcp-type MnAs on GaAs (110) system is characterized by anisotropic lattice mismatches of -7.5% and 0.7% along the [11-20] and [0001] direction, respectively. A wetting layer is observed prior to the formation of islands, indicating a Stranski-Krastanov growth mode of MnAs. The strain corresponding to the 0.7% lattice misfit is accommodated elastically, whereas the mismatch stress along perpendicular [11-20] direction is relived by the formation of a periodic array of perfect misfit dislocations with a stand-off position in MnAs lattice. The long range strain field associated with the dislocation array is constrained at the interface within a thickness of about 3.4 nm. An interfacial atomic configuration is also proposed based on the comparison between HRTEM image and the simulations. B2-type CoAl alloys are realized on (001) and (110) oriented GaAs substrates for comparison. They are both characterized by a coexistence of B2 phase and its disordered version bcc phase. The disordering is induced partially by the epitaxial strain and partially by the diffusion of point defects.
HASNAOUI, MOULAY LAHEEN. "Etude par exafs de surface de l'interface si/gaas(110) au seuil k de silicium." Paris 11, 1994. http://www.theses.fr/1994PA112435.
Full textSchwarz, Günther. "Untersuchungen zu Defekten auf und nahe der (110)-Oberfläche von GaAs und weiteren III-V-Halbleitern." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965686906.
Full textMühlenberend, Svenja [Verfasser]. "Metals and organic adsorbates on GaAs(110) : a scanning tunneling microscopy, spectroscopy and luminescence study / Svenja Mühlenberend." Kiel : Universitätsbibliothek Kiel, 2016. http://d-nb.info/1096220903/34.
Full textM'Hamedi, Omar. "Contribution à l'étude de l'interaction de l'hydrogène atomique avec les faces (110) et (100) de GaAS et InP." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376079921.
Full textM'AHAMEDI, OMAR. "Contribution a l'etude de l'interaction de l'hydrogene atomique avec les faces (110) et (100) de gaas et inp." Paris 6, 1987. http://www.theses.fr/1987PA066526.
Full textBadiane, Khalifa. "Etude par STM des états d’hybridation pd induits par un atome de Cr inséré dans la surface de GaAs(110)." Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCC189/document.
Full textIn this thesis, we investigate by scanning tunneling microscopy (STM) the effects of surface and coordination on the electronic properties of a transition metal atom occupying a cationic site in the GaAs(110) surface.By an in situ deposition method, we deposited Cr adatoms on cleaved GaAs(110) surfaces with coverage rates lower than a monolayer. And by applying voltage pulses close to a few target magnetic adatoms using the STM tip, we have manipulated them and substituted them with Ga atoms in the two first layers of the GaAs(110) surface. Thus obtaining magnetic atoms having different atomic environments, i.e. Cr adatoms, Cr atoms forming three bonds with three neighboring As atoms (Cr in the first layer) and Cr atoms forming four bonds with four neighboring As atoms (Cr in the second layer).To study the electronic properties of these transition atoms as a function of their position in the GaAs surface (110), we have realized on them STM imagery with different voltage bias as well as scanning tunneling spectroscopy (STS). They showed topographic forms with different mirror symmetries and revealed different numbers of STS peaks in the gap of the GaAs surface (110) according to their atomic site.By collaboration, density of states (DOS) calculations and simulations of STM images were carried out on Cr atoms occupying cationic sites in the GaAs bulk and in the five first layers of the GaAs surface (110) using the density functional theory (DFT). Agreements between the theoretical calculations and our experimental results have allowed us to show (i) that the measured STS peaks on the Cr atoms correspond to peaks of DOS resulting from an hybridization between the d states of Cr and the p states of their neighbors atoms of As and Ga ; (ii) that our STS measurements on the Cr atoms in the two first layers are affected by the symmetry breaking at the GaAs(110) surface; (iii) that a splitting of some induced states in the GaAs gap (110) occurs when a Cr atom passes from the first to the second surface layer; (iv) and that the measured topographic STM images on Cr atoms inserted in the first two layers of the surface correspond to wave functions of specific pd hybridization states
Wan, Qian [Verfasser], Henning [Akademischer Betreuer] Riechert, Thomas [Akademischer Betreuer] Schroeder, and W. Ted [Akademischer Betreuer] Masselink. "Transmission electron microscopy study of heterostructures grown on GaAs (110) / Qian Wan. Gutachter: Henning Riechert ; Thomas Schroeder ; W. Ted Masselink." Berlin : Humboldt Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2014. http://d-nb.info/1051371783/34.
Full textTeng, K. S. "The electronic passivation properties of silicon nano-islands at cleavage-induced defects of GaAs (110) : a scanning tunnelling microscopy and spectroscopy study." Thesis, Swansea University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.639173.
Full textIffländer, Tim [Verfasser], Rainer G. [Akademischer Betreuer] Ulbrich, and Hans Christian [Akademischer Betreuer] Hofsäss. "Electronic and Magnetic Properties of the Fe/GaAs(110) Interface / Tim Iffländer. Betreuer: Rainer G. Ulbrich. Gutachter: Rainer G. Ulbrich ; Hans Christian Hofsäss." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://d-nb.info/1085592294/34.
Full textGrandidier, Bruno. "Contribution à l'étude de faces clivées (110) de semiconducteurs III-V par spectroscopie STM en UHV : application au dopage planaire de silicium dans GaAs." Lille 1, 1997. http://www.theses.fr/1997LIL10112.
Full textKim, Danny. "Dry passivation studies of GaAs(110) surfaces by Gallium Oxide thin films deposited by electron cyclotron resonance plasma reactive molecular beam epitaxy for optoelectronic device applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ63140.pdf.
Full textBenjamin, Anne Laura. "Scanning Tunneling Microscopy Studies of Defects in Semiconductors: Inter-Defect and Host Interactions of Zn, Er, Mn, V, and Co Single-Atom Defects in GaAs(110)." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu15254254578788.
Full textDöhrmann, Stefanie [Verfasser]. "Spintronik in GaAs und (110)-GaAs-Quantenfilmen / von Stefanie Döhrmann." 2007. http://d-nb.info/985964812/34.
Full textJoyce, John Joseph. "The electron structure of metal/GaAs(110) interfaces." 1987. http://catalog.hathitrust.org/api/volumes/oclc/16390027.html.
Full textClearfield, Howard M. "Low-energy electron diffraction studies of defect structures and ordering kinetics at p(lxl) surfaces GaAs(110) and GaAs(110) p(lxl)-Sb /." 1985. http://catalog.hathitrust.org/api/volumes/oclc/12098997.html.
Full textVita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 442-451).
Iffländer, Tim. "Electronic and Magnetic Properties of the Fe/GaAs(110) Interface." Doctoral thesis, 2015. http://hdl.handle.net/11858/00-1735-0000-0028-86DE-A.
Full textHassel, Christoph [Verfasser]. "Spinabhängiger Transport in epitaktischen Fe-Leiterbahnen auf GaAs(110) / von Christoph Hassel." 2009. http://d-nb.info/996707026/34.
Full textCouto, Odilon D. D. [Verfasser]. "Acoustically induced spin transport in (110) GaAs quantum wells / von Odilon D. D. Couto." 2008. http://d-nb.info/993311768/34.
Full textHONG, GUAN-MING, and 洪冠明. "The gaussian relaxation method to study the electronic structure of the GaAs(110) surface." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/57254703214736003530.
Full textRay-Chaudhuri, Avijit Kumar. "Development of a scanning photoemission microscope based on multilayer optics and its initial application to GaAs(110) surface studies." 1993. http://catalog.hathitrust.org/api/volumes/oclc/31492370.html.
Full textTypescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 192-207).
Schwarz, Günther [Verfasser]. "Untersuchungen zu Defekten auf und nahe der (110)-Oberfläche von GaAs und weiteren III-V-Halbleitern / vorgelegt von Günther Schwarz." 2002. http://d-nb.info/965686906/34.
Full text