Quantum tunneling of spin particles in periodic potentials with asymmetric twin barriers
文献类型：期刊论文
| 作者 | Liang, JQ ; MullerKirsten, HJW ; Zhou, JG ; Zimmerschied, F ; Pu, FC |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 1997 |
| 卷号 | 393期号:3-4页码:368 |
| 关键词 | BOUNCES ENERGY SPHALERONS SYSTEM CIRCLE |
| ISSN号 | 0370-2693 |
| 通讯作者 | Liang, JQ (reprint author), UNIV KAISERSLAUTERN,DEPT PHYS,D-67653 KAISERSLAUTERN,GERMANY. |
| 中文摘要 | The tunneling effect of a periodic potential with an asymmetric twin barrier per period is calculated using the instanton method. The model is derived from the Hamiltonian of a small ferromagnetic particle in an external magnetic field using the spin-coherent-state path integral. The instantons in two neighbouring barriers differ and lead to different level shifts Delta epsilon(1), Delta epsilon(2). Using Bloch theory we derive the energy spectrum which has formally the structure of an energy band, The spectrum depends on both level shifts. The removal of Kramer's degeneracy by an external magnetic field is discussed, In addition we find a new kind of quenching of macroscopic quantum coherence which is irrelevant to Kramer's degeneracy. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51766]  |
| 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,MullerKirsten, HJW,Zhou, JG,et al. Quantum tunneling of spin particles in periodic potentials with asymmetric twin barriers[J]. PHYSICS LETTERS B,1997,393(3-4):368. |
| APA | Liang, JQ,MullerKirsten, HJW,Zhou, JG,Zimmerschied, F,&Pu, FC.(1997).Quantum tunneling of spin particles in periodic potentials with asymmetric twin barriers.PHYSICS LETTERS B,393(3-4),368. |
| MLA | Liang, JQ,et al."Quantum tunneling of spin particles in periodic potentials with asymmetric twin barriers".PHYSICS LETTERS B 393.3-4(1997):368. |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。