Escape rate of the nanospin system in a magnetic field: the first-order phase transition within quantum regime
| dc.creator | Park, Chang Soo | |
| dc.creator | Yoo, Sahng-Kyoon | |
| dc.creator | Park, D. K. | |
| dc.creator | Yoon, Dal-Ho | |
| dc.date | 1998-07-26 | |
| dc.date.accessioned | 2026-07-07T03:11:08Z | |
| dc.date.available | 2026-07-07T03:11:08Z | |
| dc.description | We have investigated the escape rate of the nanospin particle with a magnetic field applied along the easy axis. The model studied here is described by the Hamiltonian $\hat{\cal H} = K_1 \hat{S}_z^2 + K_2 \hat{S}_y^2 + gμ_b H \hat{S}_x $, $(K_1 > K_2 > 0)$ from which the escape rate is calculated within the semiclassical approximation. We have obtained a diagram for the orders of the phase transitions depending on the anisotropy constant and the external field. For $ K_2 / K_1 > 0.85$ the present model reveals, for the first time, the existence of the first-order transition within the quantum regime. | |
| dc.description | 14 pages, 5 postscript figures included | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9807344 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9807344 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/28460 | |
| dc.subject | Condensed Matter | |
| dc.title | Escape rate of the nanospin system in a magnetic field: the first-order phase transition within quantum regime | |
| dc.type | text |