2016/05/23 by Parijat Sengupta, E. Bellotti, Enrico Bellotti · 1 citation
Chemistry · Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Chemistry #Condensed matter physics #Conductivity #Electrical resistivity and conductivity #Electron #Floquet theory #Graphene research and applications #Hall conductivity #Hall effect #Heterojunction #Kubo formula #Materials science #Metal #Perovskite Materials and Applications #Physics #Quantum Hall effect #Quantum mechanics #Spin (aerodynamics) #Spin Hall effect #Spin polarization #Transition metal #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.4952722
published as Appl. Phys. Lett. 108, 211104 (2016) · 4 pages, 3 figures
openalex publication_date 2016/05/23 · arxiv created 2016/06/07 · arxiv updated 2016/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report on a possible optical tuning of the spin Hall conductivity in mono-layer transition metal dichalcogenides. Light beams of frequencies much higher than the energy scale of the system (the off-resonant condition) do not excite electrons but rearrange the band structure. The rearrangement is quantitatively established using the Floquet formalism. For such a system of mono-layer transition metal dichalcogenides, the spin Hall conductivity (calculated with the Kubo expression in presence of disorder) exhibits a drop at higher frequencies and lower intensities. Finally, we compare the spin Hall conductivity of the higher spin-orbit coupled WSe2 to MoS2; the spin Hall conductivity of WSe2 was found to be larger.