Spin-density induced by electromagnetic wave in two-dimensional electron gas

2006/10/31 by Alexander Shnirman, A Shnirman, Ivar Martin +1
Materials Science · Physics and Astronomy · #Electronic and Structural Properties of Oxides #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall

paper · pdf · doi:10.1209/0295-5075/78/27001

published as Europhys. Lett. 78, 27001 (2007) · Final published form

openalex publication_date 2007/03/21 · arxiv created 2007/03/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

We consider the magnetic response of a two-dimensional electron gas (2DEG) with a spin-orbit interaction to a long-wavelength electromagnetic excitation. We observe that the transverse electric field creates spin polarization perpendicular to the 2DEG plane. The effect is more prominent in clean systems with resolved spin-orbit-split subbands, and reaches maximum when the frequency of the wave matches the subband splitting at the Fermi momentum. The relation of this effect to the spin-Hall effect is discussed.

Citations

• Spin Current and Polarization in Impure Two-Dimensional Electron Systems with Spin-Orbit Coupling
• Observation of the Spin Hall Effect in Semiconductors
• Spin susceptibilities, spin densities, and their connection to spin currents
• Quantum field-theoretical methods in transport theory of metals
• Spin polarization of conduction electrons induced by electric current in two-dimensional asymmetric electron systems
• Dissipationless Quantum Spin Current at Room Temperature
• Quasiclassical approach to the spin Hall effect in the two-dimensional electron gas
• Chiral spin resonance and spin-Hall conductivity in the presence of the electron-electron interactions