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Title: Fermi surface distortion induced by interaction between Rashba and Zeeman effects

To evaluate Fermi surface distortion induced by interaction between Rashba and Zeeman effects, the channel resistance in an InAs quantum well layer is investigated with an in-plane magnetic field transverse to the current direction. In the magnetoresistance curve, the critical point occurs at ∼3.5 T, which is approximately half of the independently measured Rashba field. To get an insight into the correlation between the critical point in magnetoresistance curve and the Rashba strength, the channel conductivity is calculated using a two-dimensional free-electron model with relaxation time approximation. The critical point obtained from the model calculation is in agreement with the experiment, suggesting that the observation of critical point can be an alternative method to experimentally determine the Rashba parameter.
Authors:
;  [1] ;  [2] ; ;  [1] ;  [3] ;  [2]
  1. Spin Convergence Research Center, Korea Institute of Science and Technology, Seoul 136-791 (Korea, Republic of)
  2. (Korea, Republic of)
  3. KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 136-701 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22410001
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; APPROXIMATIONS; CORRELATIONS; FERMI LEVEL; INDIUM ARSENIDES; LAYERS; MAGNETIC FIELDS; MAGNETORESISTANCE; QUANTUM WELLS; RELAXATION TIME; TWO-DIMENSIONAL SYSTEMS; ZEEMAN EFFECT