skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Landau level crossing in a spin-orbit coupled two-dimensional electron gas

Abstract

We have studied experimentally the Landau level (LL) spectrum of a two-dimensional electron gas (2DEG) in an In{sub 0.53}Ga{sub 0.47}As/InP quantum well structure by means of low-temperature magneto-transport coincidence measurement in vector magnetic fields. It is well known that LL crossing occurs in tilted magnetic fields due to a competition between cyclotron energy and Zeeman effect. Remarkably, here we observe an additional type of level-crossing resulting from a competition between Rashba and Zeeman splitting in a small magnetic field, consistent with the theoretical prediction for strongly spin-orbit coupled 2DEG.

Authors:
; ;  [1];  [2];  [1];  [2];  [3]
  1. International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871 (China)
  2. (China)
  3. (United States)
Publication Date:
OSTI Identifier:
22395647
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ELECTRON GAS; GALLIUM ARSENIDES; INDIUM PHOSPHIDES; L-S COUPLING; MAGNETIC FIELDS; MAGNETORESISTANCE; QUANTUM WELLS; SPIN; TWO-DIMENSIONAL SYSTEMS; VECTORS; ZEEMAN EFFECT

Citation Formats

Wu, Xing-Jun, Li, Ting-Xin, Zhang, Chi, Collaborative Innovation Center of Quantum Matter, Beijing 100871, Du, Rui-Rui, Collaborative Innovation Center of Quantum Matter, Beijing 100871, and Rice University, Houston, Texas 77251-1892. Landau level crossing in a spin-orbit coupled two-dimensional electron gas. United States: N. p., 2015. Web. doi:10.1063/1.4905492.
Wu, Xing-Jun, Li, Ting-Xin, Zhang, Chi, Collaborative Innovation Center of Quantum Matter, Beijing 100871, Du, Rui-Rui, Collaborative Innovation Center of Quantum Matter, Beijing 100871, & Rice University, Houston, Texas 77251-1892. Landau level crossing in a spin-orbit coupled two-dimensional electron gas. United States. doi:10.1063/1.4905492.
Wu, Xing-Jun, Li, Ting-Xin, Zhang, Chi, Collaborative Innovation Center of Quantum Matter, Beijing 100871, Du, Rui-Rui, Collaborative Innovation Center of Quantum Matter, Beijing 100871, and Rice University, Houston, Texas 77251-1892. Mon . "Landau level crossing in a spin-orbit coupled two-dimensional electron gas". United States. doi:10.1063/1.4905492.
@article{osti_22395647,
title = {Landau level crossing in a spin-orbit coupled two-dimensional electron gas},
author = {Wu, Xing-Jun and Li, Ting-Xin and Zhang, Chi and Collaborative Innovation Center of Quantum Matter, Beijing 100871 and Du, Rui-Rui and Collaborative Innovation Center of Quantum Matter, Beijing 100871 and Rice University, Houston, Texas 77251-1892},
abstractNote = {We have studied experimentally the Landau level (LL) spectrum of a two-dimensional electron gas (2DEG) in an In{sub 0.53}Ga{sub 0.47}As/InP quantum well structure by means of low-temperature magneto-transport coincidence measurement in vector magnetic fields. It is well known that LL crossing occurs in tilted magnetic fields due to a competition between cyclotron energy and Zeeman effect. Remarkably, here we observe an additional type of level-crossing resulting from a competition between Rashba and Zeeman splitting in a small magnetic field, consistent with the theoretical prediction for strongly spin-orbit coupled 2DEG.},
doi = {10.1063/1.4905492},
journal = {Applied Physics Letters},
number = 1,
volume = 106,
place = {United States},
year = {Mon Jan 05 00:00:00 EST 2015},
month = {Mon Jan 05 00:00:00 EST 2015}
}