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

Journal Article · Mon Jan 05 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4905492· OSTI ID:22395647

Wu, Xing-Jun; Li, Ting-Xin; Zhang, Chi ^[1]; Du, Rui-Rui ^[1]

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1. International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871 (China)

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.

• OSTI ID: 22395647
• Journal Information: Applied Physics Letters, Vol. 106, Issue 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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