Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"HgTe"”.
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Phase coherent transport phenomena in HgTe quantum well structures
… the SO Berry phase directly. In manganese doped HgTe QWs two different effects simultaneously cause spin splitting: the giant Zeeman and the Rashba effect. By analysing the Shubnikovde Haas oscillations and the node positions of their beating pattern, it has been possible to separate these two …
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Elektronische Zustände in Typ-III-Halbleiterheterostrukturen
… Schicht von 30 °A bis 100 °A aus dem Halbmetall HgTe, dem Trogmaterial, in eine Legierung aus Hg(1-x)Cd(x)Te, dem Barrierenmaterial, eingebettet und zu einem Übergitter aufgebaut. Zweidimensionale Typ-III-Halbleiterheterostrukturen, wie die HgTe-Hg(1-x)Cd(x)Te-Quantentrogstrukturen und …
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Cd3P2 Quantum Dots As Sources for Quantum Emission and Detection of Near-IR Radiation
… PbS, PbSe), mercury chalcogenides (e.g., HgSe, HgTe), and InAs are the primary near-IR capable CQDs researched, but these species suffer from setbacks such as long carrier lifetimes (>1 µs, PbS/PbSe), toxic precursors and products (HgSe/HgTe), and non-trivial syntheses due to precursor …
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Theory of topological insulators and its applications
… the study of insulators? ^ This thesis examines HgTe and Bi2Te3 as 2D and 3D TIs respectively. Design principles for utilizing HgTe based 2D TIs as a switch and tuning the critical width is explained. Further the surface states, which are the counterpart of the edge states in a 3D TI depend on …
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Substrate cleaning using a remote hydrogen rf-plasma
… the removal of these layers the H-plasma etches HgTe, in the case of CMT, and CdTe, in the case of CZT. For silicon, the remote rf H-plasma was found to be ineffective at removing either the native oxide, or the oxide left by standard wet chemical processing. The hydrocarbon impurities were …
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Topics in two-dimensional systems with spin-orbit interaction
… in mesoscopic ring structures patterned from HgTe quantum wells related to the Aharonov-Casher effect and the spin Hall effect. We find that the transport properties are affected by the carrier density as well as the spin orbit interaction. We find that the conductivity is larger in hole gas …
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Optische Charakterisierung von II-VI-Halbleiter-Oberflächen in Kombination mit First-Principles-Rechnungen
… MnTe(100)-Oberfläche und die Hg-reiche c(2x2) HgTe(100)-Oberfläche untersucht. Schließlich wurde der Wachstumsstart von CdSe auf der BeTe(100)-Oberfläche im Bereich weniger Monolagen (1-5 ML) CdSe analysiert, wobei die hohe Empfindlichkeit der Ramanspektroskopie bereits den Nachweis einer …
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Organometallic Synthesis Kinetics of CdSe Quantum Dots
CdSe quantum dots produced by organometallic synthesis are useful as tunable emitters for photonic devices and as multi-colored protein markers for biomedical imaging, applications requiring bright and narrow emission. A diffusion-limited model helped monitor growth rates via photoluminescence and …
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Methods for Accurately Modeling Complex Materials
We investigate and benchmark a variety of computational methods for accurately modeling complex materials. We focus on three specific methods used to examine systems with real world interest: screened hybrid density functional theory (DFT) used for accurate treatment of band gaps in semiconductors, …