Intrinsic spin-Hall accumulation in honeycomb lattices: Band structure effects
| dc.creator | Liu, Ming-Hao | |
| dc.creator | Bihlmayer, Gustav | |
| dc.creator | Blügel, Stefan | |
| dc.creator | Chang, Ching-Ray | |
| dc.date | 2007-07-24 | |
| dc.date | 2007-09-08 | |
| dc.date.accessioned | 2026-07-07T08:27:58Z | |
| dc.date.available | 2026-07-07T08:27:58Z | |
| dc.description | Local spin and charge densities on a two-dimensional honeycomb lattice are calculated by the Landauer-Keldysh formalism (LKF). Through the empirical tight-binding method, we show how the realistic band structure can be brought into the LKF. Taking the Bi(111) surface, on which strong surface states and Rashba spin-orbit coupling are present [Phys. Rev. Lett. 93, 046403 (2004)], as a numeric example, we show typical intrinsic spin-Hall accumulation (ISHA) patterns thereon. The Fermi-energy-dependence of the spin and charge transport in two-terminal nanostructure samples is subsequently analyzed. By changing E_{F}, we show that the ISHA pattern is nearly isotropic (free-electron-like) only when E_{F} is close to the band bottom, and is sensitive/insensitive to E_{F} for the low/high bias regime with such E_{F}. With E_{F} far from the band bottom, band structure effects thus enter the ISHA patterns and the transport direction becomes significant. | |
| dc.description | 4 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0707.3626 | |
| dc.identifier | http://arxiv.org/abs/0707.3626 | |
| dc.identifier | Phys. Rev. B 76, 121301(R) (2007) | |
| dc.identifier | doi:10.1103/PhysRevB.76.121301 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/137458 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Intrinsic spin-Hall accumulation in honeycomb lattices: Band structure effects | |
| dc.type | text |