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Title: Separation of Rashba and Dresselhaus spin-orbit interactions using crystal direction dependent transport measurements

The Rashba spin-orbit interaction effective field is always in the plane of the two-dimensional electron gas and perpendicular to the carrier wavevector but the direction of the Dresselhaus field depends on the crystal orientation. These two spin-orbit interaction parameters can be determined separately by measuring and analyzing the Shubnikov-de Haas oscillations for various crystal directions. In the InAs quantum well system investigated, the Dresselhaus term is just 5% of the Rashba term. The gate dependence of the oscillation patterns clearly shows that only the Rashba term is modulated by an external electric field.
Authors:
 [1] ;  [2] ; ; ;  [1] ;  [3] ;  [4] ;  [1] ;  [2]
  1. Spin Convergence Research Center, Korea Institute of Science and Technology (KIST), Seoul 136-791 (Korea, Republic of)
  2. (Korea, Republic of)
  3. Department of Physics and Graphene Research Institute, Sejong University, Seoul 143-747 (Korea, Republic of)
  4. Department of Materials Science and Engineering, Yonsei University, Seoul 120-749 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22253692
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 25; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CARRIERS; CRYSTALS; ELECTRIC FIELDS; ELECTRON GAS; INDIUM ARSENIDES; L-S COUPLING; ORIENTATION; OSCILLATIONS; QUANTUM WELLS