Non-Perturbative Bounds on Hyperfine-Induced Electron Spin Coherence Times
| dc.creator | Shenvi, Neil | |
| dc.creator | de Sousa, Rogerio | |
| dc.creator | Whaley, K. Birgitta | |
| dc.date | 2004-10-12 | |
| dc.date | 2005-07-18 | |
| dc.date.accessioned | 2026-07-07T03:01:26Z | |
| dc.date.available | 2026-07-07T03:01:26Z | |
| dc.description | We address the decoherence of a localized electron spin in an external magnetic field due to the hyperfine interaction with a lattice of nuclear spins. Using a completely non-perturbative method, rigorous bounds on the T_1 and T_2 coherence times for the electron spin are provided. It is shown that for magnetic fields B greater than some critical field B_c (B_c ~ .001 - 2 Tesla for the systems studied here), the z-polarization of the electron spin cannot relax, and hence T_1 is infinite. However, even at high fields dephasing can still occur. We provide a lower bound on the T_2 coherence time that explicitly takes into account the effects of a spin echo pulse sequence. | |
| dc.description | 23 pages, 3 figures updated references, minor revisions | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0410308 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0410308 | |
| dc.identifier | Phys. Rev. B 71, 144419 (2005) | |
| dc.identifier | doi:10.1103/PhysRevB.71.144419 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/25054 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Non-Perturbative Bounds on Hyperfine-Induced Electron Spin Coherence Times | |
| dc.type | text |