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

Journal Article · Mon Dec 16 00:00:00 EST 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4855495· OSTI ID:22253692

Ho Park, Youn ^[1]; Kim, Hyung-jun; Chang, Joonyeon; Hee Han, Suk ^[1]; Eom, Jonghwa ^[2]; Choi, Heon-Jin ^[3]

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1. Spin Convergence Research Center, Korea Institute of Science and Technology (KIST), Seoul 136-791 (Korea, Republic of)
2. Department of Physics and Graphene Research Institute, Sejong University, Seoul 143-747 (Korea, Republic of)
3. Department of Materials Science and Engineering, Yonsei University, Seoul 120-749 (Korea, Republic of)

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.

• OSTI ID: 22253692
• Journal Information: Applied Physics Letters, Vol. 103, Issue 25; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARRIERS
CRYSTALS
ELECTRIC FIELDS
ELECTRON GAS
INDIUM ARSENIDES
L-S COUPLING
ORIENTATION
OSCILLATIONS
QUANTUM WELLS