skip to main content

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

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