Magnetic relaxation and critical current density of MgB2 thin films
文献类型：期刊论文
| 作者 | Wen, HH ; Li, SL ; Zhao, ZW ; Jin, H ; Ni, YM ; Kang, WN ; Kim, HJ ; Choi, EM ; Lee, SI |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2001 |
| 卷号 | 64期号:13 |
| 关键词 | HIGH-TC SUPERCONDUCTORS HIGH-TEMPERATURE SUPERCONDUCTORS BA-CU-O FLUX-CREEP QUANTUM LIQUID VORTEX LATTICE DEPENDENCE VORTICES CRYSTALS YBA2CU3O7 |
| ISSN号 | 0163-1829 |
| 通讯作者 | Wen, HH: Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | The tunneling splitting in biaxial ferrimagnetic particles at excited states with an explicit calculation of the prefactor of exponent is obtained in terms of periodic instantons that are responsible for tunneling at excited states and is shown as a function of magnetic field applied along an arbitrary direction in the plane of hard and medium axes. Using complex time path integral we demonstrate the oscillation of tunnel splitting with respect to the magnitude and the direction of the magnetic field due to the quantum phase interference of two tunneling paths of opposite windings. The oscillation is gradually smeared and in the end the tunnel splitting monotonously increases with the magnitude of the magnetic field when the direction of the magnetic field tends to the medium axis. The oscillation behavior is similar to the recent experimental observation with Fe-8 molecular clusters. A candidate of possible experiments to observe the effect of quantum phase interference in the ferrimagnetic particles is proposed. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/41411]  |
| 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 | Wen, HH,Li, SL,Zhao, ZW,et al. Magnetic relaxation and critical current density of MgB2 thin films[J]. PHYSICAL REVIEW B,2001,64(13). |
| APA | Wen, HH.,Li, SL.,Zhao, ZW.,Jin, H.,Ni, YM.,...&Lee, SI.(2001).Magnetic relaxation and critical current density of MgB2 thin films.PHYSICAL REVIEW B,64(13). |
| MLA | Wen, HH,et al."Magnetic relaxation and critical current density of MgB2 thin films".PHYSICAL REVIEW B 64.13(2001). |
入库方式： OAI收割
来源：物理研究所
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