2017/10/03 by Paul Z. Hanakata, Aleksandr Rodin, A. S. Rodin +5 · 39 citations
Materials Science · Physics and Astronomy · #2D Materials and Applications #Atomic orbital #Condensed matter physics #Conduction band #Electronic and Structural Properties of Oxides #Electronic structure #Ferromagnetism #Formalism (music) #Lambda #Materials science #Monolayer #Nanotechnology #Physics #Quantum mechanics #Rashba effect #Semiconductor #Spin (aerodynamics) #Spintronics #Spin–orbit interaction #Tight binding #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.96.161401
published in Physical review. B./Physical review. B 96(16) (American Physical Society)
openalex publication_date 2017/10/03 · arxiv created 2017/10/26 · arxiv updated 2017/10/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We propose the lead sulphide (PbS) monolayer as a two-dimensional semiconductor with a large Rashba-like spin-orbit effect controlled by the out-of-plane buckling. The buckled PbS conduction band is found to possess Rashba-like dispersion and spin texture at the M and \mathrm\ensuremathΓ points, with large effective Rashba parameters of \ensuremathλ\ensuremath∼5 eV \AA and \ensuremathλ\ensuremath∼1 eV \AA, respectively. Using a tight-binding formalism, we show that the Rashba effect originates from the very large spin-orbit interaction and the hopping term that mixes the in-plane and out-of-plane p orbitals of Pb and S atoms. The latter, which depends on the buckling angle, can be controlled by applying strain to vary the spin texture as well as the Rashba parameter at \mathrm\ensuremathΓ and M. Our density functional theory results together with tight-binding formalism provide a unifying framework for designing Rashba monolayers and for manipulating their spin properties.