Quantum phase interference for quantum tunneling in spin systems
文献类型：期刊论文
| 作者 | Liang, JQ ; Muller-Kirsten, HJW ; Park, DK ; Pu, FC |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2000 |
| 卷号 | 61期号:13页码:8856 |
| 关键词 | FERROMAGNETIC PARTICLES MAGNETIC PARTICLES ENERGY SPHALERONS COHERENCE CIRCLE |
| ISSN号 | 1098-0121 |
| 通讯作者 | Liang, JQ (reprint author), Univ Kaiserslautern, Dept Phys, D-67653 Kaiserslautern, Germany. |
| 中文摘要 | The point-particle-like Hamiltonian of a biaxial spin particle with external magnetic field along the hard axis is obtained in terms of the potential field description of spin systems with exact spin-coordinate correspondence. The Zeeman energy term turns out to be an effective gauge potential which leads to a nonintegrable phase of the Euclidean Feynman propagator. The phase interference between clockwise and anticlockwise under barrier propagations is recognized explicitly as the Aharonov-Bohm effect. An additional phase which is significant for quantum phase interference is discovered with the quantum theory of spin systems in addition to the known phase obtained with the semiclassical treatment of spin. We also show the energy dependence of the effect and obtain the tunneling splitting at excited states with the help of periodic instantons. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51704]  |
| 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,Muller-Kirsten, HJW,Park, DK,et al. Quantum phase interference for quantum tunneling in spin systems[J]. PHYSICAL REVIEW B,2000,61(13):8856. |
| APA | Liang, JQ,Muller-Kirsten, HJW,Park, DK,&Pu, FC.(2000).Quantum phase interference for quantum tunneling in spin systems.PHYSICAL REVIEW B,61(13),8856. |
| MLA | Liang, JQ,et al."Quantum phase interference for quantum tunneling in spin systems".PHYSICAL REVIEW B 61.13(2000):8856. |
入库方式： OAI收割
来源：物理研究所
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