Enhancement of quantum tunneling for excited states in ferromagnetic particles
文献类型：期刊论文
| 作者 | Liang, JQ ; Zhang, YB ; Muller-Kirsten, HJW ; Zhou, JG ; Zimmerschied, F ; Pu, FC |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 1998 |
| 卷号 | 57期号:1页码:529 |
| 关键词 | RESONANCE EXPERIMENTS MAGNETIC PARTICLES POWER ABSORPTION FINITE-ENERGY SPHALERONS COHERENCE BOUNCES CIRCLE SPINS |
| ISSN号 | 1098-0121 |
| 通讯作者 | Liang, JQ: Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany. |
| 中文摘要 | A formula suitable for a quantitative evaluation of the tunneling effect in a ferromagnetic particle is derived with the help of the instanton method. The tunneling between nth degenerate states of neighboring wells is dominated by a periodic pseudoparticle configuration. The low-lying level-splitting previously obtained with the Lehmann-Symanzik-Zimmermann method in field theory in which the tunneling is viewed as the transition of n bosons induced by the usual (vacuum) instanton is recovered. The observation made with our result is that the tunneling effect increases at excited states. The results should be useful in analyzing results of experimental tests of macroscopic quantum coherence in ferromagnetic particles. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37430]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liang, JQ,Zhang, YB,Muller-Kirsten, HJW,et al. Enhancement of quantum tunneling for excited states in ferromagnetic particles[J]. PHYSICAL REVIEW B,1998,57(1):529. |
| APA | Liang, JQ,Zhang, YB,Muller-Kirsten, HJW,Zhou, JG,Zimmerschied, F,&Pu, FC.(1998).Enhancement of quantum tunneling for excited states in ferromagnetic particles.PHYSICAL REVIEW B,57(1),529. |
| MLA | Liang, JQ,et al."Enhancement of quantum tunneling for excited states in ferromagnetic particles".PHYSICAL REVIEW B 57.1(1998):529. |
入库方式： OAI收割
来源：物理研究所
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