Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/119591
Title: REAL SPACE GEOMETRICAL EFFECTS IN SPIN ORBIT INTERACTION SYSTEMS
Authors: SIU ZHUO BIN
Keywords: spintronics, topological insulator, spin orbit interaction; curvature; geometry; nanoelectonics
Issue Date: 5-Jan-2015
Citation: SIU ZHUO BIN (2015-01-05). REAL SPACE GEOMETRICAL EFFECTS IN SPIN ORBIT INTERACTION SYSTEMS. ScholarBank@NUS Repository.
Abstract: In this thesis, we study the effects of (real space) geometry in two physical systems where spin-orbit interactions (SOI) play predominant roles ¿ 2-dimensional electron gas with Rashba SOI, and topological insulators (TI). The coupling between the spin and momentum degrees of freedom due to SOI allows the manipulation of one to influence the other. The momentum may, for example, be constrained by the geometry of system to move along certain directions so as to manipulate spin for spintronics applications. We derive the Hamiltonians for arbitrarily curved 2DEG RSOI and TI systems. We then study, analytically, the effect of charge carriers which adiabatically follow the curvature in gently curving 2DEG RSOI systems, and the constraints imposed by the Heisenberg equations of motion on energy eigenstates. We finally focus on magnetized TI nanocylinders, and study the effects of axial and out-of-plane magnetizations on the magnetoreistance between coaxial cylinders.
URI: http://scholarbank.nus.edu.sg/handle/10635/119591
Appears in Collections:Ph.D Theses (Open)

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