Photoinduced spin-Hall resonance in a k3 -Rashba spin-orbit coupled two-dimensional hole system

Ankita Bhattacharya, SK Firoz Islam

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

7 Sitaatiot (Scopus)
130 Lataukset (Pure)

Abstrakti

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.
AlkuperäiskieliEnglanti
Artikkeli081411
Sivut1-6
Sivumäärä6
JulkaisuPhysical Review B - Condensed Matter and Materials Physics
Vuosikerta104
Numero8
DOI - pysyväislinkit
TilaJulkaistu - 15 elok. 2021
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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