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Photoinduced spin-Hall resonance in a k3 -Rashba spin-orbit coupled two-dimensional hole system
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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6
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Physical Review B - Condensed Matter and Materials Physics, Volume 104, issue 8, pp. 1-6
Abstract
We study the band structure modulation and spin-Hall effect of an irradiated two-dimensional heavy-hole system with k3-Rashba spin-orbit coupling. We find that the band structure becomes anisotropic under the illumination by the light. Most remarkably, in the presence of linearly polarized light a pair of additional spin-degeneracy points, apart from the Γ point, emerge in the energy dispersion. The locations of these points are solely determined by the amplitude of the incident light. If this degeneracy occurs around the Fermi level, the spin-Hall conductivity exhibits a resonance. Away from the degeneracy points, the light rotates the average spin polarization. The possible effects of k3-Dresselhaus spin-orbit coupling are also discussed.
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Bhattacharya, A & Islam, SK F 2021, 'Photoinduced spin-Hall resonance in a k3 -Rashba spin-orbit coupled two-dimensional hole system', Physical Review B - Condensed Matter and Materials Physics, vol. 104, no. 8, 081411, pp. 1-6. https://doi.org/10.1103/PhysRevB.104.L081411