Universal spin-polarization fluctuations in 1D wires with magnetic impurities
| dc.creator | Mortensen, N. A. | |
| dc.creator | Egues, J. C. | |
| dc.date | 2001-12-20 | |
| dc.date | 2002-10-07 | |
| dc.date.accessioned | 2026-07-07T02:43:54Z | |
| dc.date.available | 2026-07-07T02:43:54Z | |
| dc.description | We study conductance and spin-polarization fluctuations in one-dimensional wires with spin-5/2 magnetic impurities (Mn). Our tight-binding Green function approach goes beyond mean field thus including s-d exchange-induced spin-flip scattering. In a certain parameter range, we find that spin flip suppresses conductance fluctuations while enhancing spin-polarization fluctuations. More importantly, spin-polarization fluctuations attain a universal value 1/3 for large enough spin flip strengths. This intrinsic spin-polarization fluctuation may pose a severe limiting factor to the realization of steady spin-polarized currents in Mn-based 1D wires. | |
| dc.description | 5 pages including 4 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0112376 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0112376 | |
| dc.identifier | Phys. Rev. B 66, 153306 (2002) | |
| dc.identifier | doi:10.1103/PhysRevB.66.153306 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/18691 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Universal spin-polarization fluctuations in 1D wires with magnetic impurities | |
| dc.type | text |