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Light-induced spin polarizations in quantum rings

2014/02/23 by Fateme K. Joibari, Ya. M. Blanter, G. Bauer +1 · 32 citations
Chemistry · Engineering · Physics and Astronomy · #Chemistry #Condensed matter physics #Electron #Faraday cage #Faraday effect #Ferromagnetism #Laser #Linear polarization #Magnetic field #Magnetic properties of thin films #Magnetization #Magneto-Optical Properties and Applications #Perpendicular #Physics #Polarization (electrochemistry) #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Spin (aerodynamics) #Spin Hall effect #Spin polarization #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.90.155301

published in Physical Review B 90(15) (American Physical Society) · 12 pages, 4 figures

arxiv created 2014/02/23 · openalex publication_date 2014/10/02 · arxiv updated 2014/10/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Nonresonant circularly polarized electromagnetic radiation can exert torques on magnetizations by the inverse Faraday effect (IFE). Here, we discuss the enhancement of IFE by spin-orbit interactions. We illustrate the principle by studying a simple generic model system, i.e., the quasi-one-dimensional ring in the presence of linear/cubic Rashba and Dresselhaus interactions. We combine the classical IFE in electron plasmas that is known to cause persistent currents in the plane perpendicular to the direction of the propagation of light with the concept of current and spin-orbit-induced spin transfer torques. We calculate light-induced spin polarization that in ferromagnets might give rise to magnetization switching.

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