Magnetotransport phenomena in low dimensional systems
Abstract
The principal topic of my research is the properties of quantum systems. This field has become quite active and interdisciplinary recently, because of emerging new areas of spintronics and quantum information, on the boundary of physics, materials science and engineering, chemistry and information science. I have been studying the fundamental properties of low dimensional systems, such as one dimensional quantum point contacts, quantum dots and two dimensional electron liquid. These topics are good candidates for the future spintronics devices. Many analytical calculations for electronic systems have been done during past decades, but hole systems are much less known and studied. Recently hole systems attain more and more attention because of the peculiar coupling between spin and the orbital momentum of holes. We have developed a new approach of the two dimensional hole system in the presence of in-plane magnetic field, taking into account anisotropy effects. We started our study with the realization of the anisotropy of holes confirmed by the inspiring experiments carried out by Leonid Rokhinson's group here at Purdue [1]. Our new approach allowed us to explain their experimental data. Our work has generated several applications of our method of computation and allowed explanation of experimental results by other experimental groups. In particular, we resolved the puzzling red shift of the Fermi energy discovered by Los Alamos group [2, 3]. Our results are valid for both two dimensional electron and hole systems subject to in-plane magnetic field.
Degree
Ph.D.
Advisors
Lyanda-Geller, Purdue University.
Subject Area
Condensed matter physics
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