Conservation of spin current
| dc.creator | Wang, Jian | |
| dc.creator | Wang, Baigeng | |
| dc.creator | Ren, Wei | |
| dc.creator | Guo, Hong | |
| dc.date | 2005-07-07 | |
| dc.date | 2006-02-24 | |
| dc.date.accessioned | 2026-07-07T06:41:17Z | |
| dc.date.available | 2026-07-07T06:41:17Z | |
| dc.description | The conventional definition of spin-current, namely spin density multiplied by the group velocity, is not a conserved quantity due to possible spin rotations caused by spin-orbit (SO) interaction. However, in a model with spin-spin interactions, rotation of a spin causes a dynamic response of surrounding spins that opposes the rotation. Such a many-body effect restores the spin-current conservation. Here we prove that the non-conservation problem of spin-current can be resolved if a self-consistent spin-spin interaction is included in the analysis. We further derive a spin-conductance formula which partitions spin-current into different leads of a multi-lead conductor. | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0507159 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0507159 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/101617 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Conservation of spin current | |
| dc.type | text |