Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/118612
Title: Novel Aspects of Localization, Delocalization, and Anomalous Transport in One-dimensional Systems
Authors: ZHAO QIFANG
Keywords: disorder, graphene, QW, localization, transport, quantum
Issue Date: 22-Aug-2014
Source: ZHAO QIFANG (2014-08-22). Novel Aspects of Localization, Delocalization, and Anomalous Transport in One-dimensional Systems. ScholarBank@NUS Repository.
Abstract: In this thesis, we investigate disorder-induced effects in some newly discovered or not fully explored one-dimensional (1D) systems that are related to the current research frontiers, e.g., graphene and topological insulators. Specifically, we firstly study 1D disordered graphene superlattices, and show that both localization and delocalization can exist in these systems. We also show that disorder can help collimate electron beams in the superlattice. Then we move to another novel system, a disordered quantum walk (QW) model. We demonstrate that our QW model possesses the physics of off-diagonal disorder, and propose an experimental realization of the delocalized off-diagonal disordered state using the adiabatic theorem. Lastly, we study an effectively disordered periodically driven system, the relativistic kicked-rotor. We investigate disorder effects in our driven system and find that its natural yet special configurations of disorder leads to superballistic transport in the momentum space.
URI: http://scholarbank.nus.edu.sg/handle/10635/118612
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
ZhaoQF.pdf17.14 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

131
checked on Feb 17, 2018

Download(s)

200
checked on Feb 17, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.