Four-Step Evolution of Spin-Hall Conductance: Tight-Binding Electrons with Rashba Coupling in a Magnetic Field
| dc.creator | Wang, Yi-Fei | |
| dc.creator | Zhao, Yang | |
| dc.creator | Gong, Chang-De | |
| dc.date | 2007-12-29 | |
| dc.date.accessioned | 2026-07-07T09:48:55Z | |
| dc.date.available | 2026-07-07T09:48:55Z | |
| dc.description | An intriguing magneto-transport property is demonstrated by tight-binding lattice electrons with Rashba spin-orbit coupling (SOC) in a magnetic field. With the flux strength $ϕ={2π/N}$ ($N$ is an integer) and the Zeeman splitting fixed, when increasing the Rashba SOC $λ$, the spin-Hall and charge-Hall conductances (SHC and CHC) undergo four-step evolutions: the SHC shows size-dependent resonances and jumps at three critical $λ_{c}$'s, and changes its sign at $λ_{c1}$ and $λ_{c3}$; while the CHC exhibits three quantum jumps by $-Ne^2/h$, $+2Ne^2/h$ and $-Ne^2/h$. Such four-step evolutions are also reflected in topological characters and spin polarizations of edge states of a cylindrical system, and are robust against weak disorder. | |
| dc.description | 4 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/0801.0035 | |
| dc.identifier | http://arxiv.org/abs/0801.0035 | |
| dc.identifier | Phys. Rev. B 78, 045301 (2008) | |
| dc.identifier | doi:10.1103/PhysRevB.78.045301 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/164396 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Materials Science | |
| dc.title | Four-Step Evolution of Spin-Hall Conductance: Tight-Binding Electrons with Rashba Coupling in a Magnetic Field | |
| dc.type | text |