Zero-field spin splitting in a two-dimensional electron gas with the spin-orbit interaction revisited

Abstract

We consider a two-dimensional electron gas (2DEG) with the Rashba spin-orbit interaction (SOI) in presence of a perpendicular magnetic field. We derive analytical expressions of the density of states (DOS) of a 2DEG with the Rashba SOI in presence of magnetic field by using the Green's function technique. The DOS allows us to obtain the analytical expressions of the magnetoconductivities for spin-up and spin-down electrons. The conductivities for spin-up and spin-down electrons oscillate with different frequencies and gives rise to the beating patterns in the amplitude of the Shubnikov de Hass (SdH) oscillations. We find a simple equation which determines the zero-field spin splitting energy if the magnetic field corresponding to any beat node is known from the experiment. Our analytical results reproduce well the experimentally observed non-periodic beating patterns, number of oscillations between two successive nodes and the measured zero-field spin splitting energy.

5 pages, 2 figures

References in corpus (2)

• Dissipationless Quantum Spin Current at Room Temperature
• Semiconductor Spintronics

Cited by in corpus (5)

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• Magnetotransport properties of two-dimensional fermions with $k$-cubic Rashba spin-orbit interaction
• Thermoelectric probe for Rashba spin-orbit interaction strength in a two dimensional electron gas
• Magnetotransport properties of an unconventional Rashba spin-orbit coupled two-dimensional electronic system