Non-equilibrium study of spin wave interference in systems with both Rashba and Dresselhaus (001) spin-orbit coupling

Journal Article · Wed May 07 04:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4866384· OSTI ID:22273718

Chen, Kuo-Chin; Su, Yu-Hsin; Chang, Ching-Ray ^[1]; Chen, Son-Hsien ^[2]

---

1. Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China)
2. Department of Applied Physics and Chemistry, University of Taipei, No. 1, Aiguo W. Rd., Zhongzheng Dist., Taipei City 100, Taiwan (China)

We study the electron spin transport in two dimensional electron gas (2DEG) system with both Rashba and Dresselhaus (001) spin-orbital coupling (SOC). We assume spatial behavior of spin precession in the non-equilibrium transport regime, and study also quantum interference induced by non-Abelian spin-orbit gauge field. The method we adopt in this article is the non-equilibrium Green's function within a tight binding framework. We consider one ferromagnetic lead which injects spin polarized electron to a system with equal strength of Rashba and Dresselhaus (001) SOC, and we observe the persistent spin helix property. We also consider two ferromagnetic leads injecting spin polarized electrons into a pure Dresselhaus SOC system, and we observe the resultant spin wave interference pattern.

• OSTI ID: 22273718
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 17 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL STRUCTURE
ELECTRON GAS
ELECTRONS
FERROMAGNETISM
GREEN FUNCTION
INTERFERENCE
L-S COUPLING
SPIN
SPIN ORIENTATION
SPIN WAVES
TWO-DIMENSIONAL CALCULATIONS