| 一维铁磁链中量子孤波的能级和磁矩 |
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| 引用本文： | 李德俊,米贤武,邓科.一维铁磁链中量子孤波的能级和磁矩[J].海洋学报,2010,32(10):7344-7349. |
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| 作者姓名： | 李德俊 米贤武 邓科 |
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| 作者单位： | 吉首大学物理科学与信息工程学院, 吉首 416000;吉首大学物理科学与信息工程学院, 吉首 416000;吉首大学物理科学与信息工程学院, 吉首 416000 |
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| 基金项目： | 湖南省教育厅科研基金(批准号:09C825)资助的课题. |
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| 摘 要： | 使用Hartree近似和一种简化的准离散多标度方法,研究了具有交换作用和经典磁矩相互作用的一维铁磁链中的量子孤波解. 这种一维铁磁链中不仅存在着运动的量子孤波,也存在着静态的量子孤波(即量子内禀局域模).利用所获得的量子孤波解,进一步研究了量子孤波的能级和由量子孤波所携带的磁矩. 研究表明,量子孤波的能量和磁矩都是量子化的,这些结果为正确理解磁性材料中像磁滞回线的量子台阶等宏观量子特性提供了一条可能的途径.
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| 关 键 词： | 一维铁磁链 量子孤波 能级 磁矩 |
| 修稿时间： | 2/2/2010 12:00:00 AM |
Energy levels and magnetic moments of the quantumsolitary wave in a one-dimensional ferromagnetic chain |
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| Li De-Jun,Mi Xian-Wu and Deng Ke.Energy levels and magnetic moments of the quantumsolitary wave in a one-dimensional ferromagnetic chain[J].Acta Oceanologica Sinica (in Chinese),2010,32(10):7344-7349. |
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| Authors: | Li De-Jun Mi Xian-Wu and Deng Ke |
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| Institution: | College of Physics Science and Information Engineering, Jishou University, Jishou 416000, China;College of Physics Science and Information Engineering, Jishou University, Jishou 416000, China;College of Physics Science and Information Engineering, Jishou University, Jishou 416000, China |
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| Abstract: | By using the Hartree approximation and the simplified method of quasidiscreteness multiple scales, we have studied quantum solitary wave solutions for a one-dimensional ferromagnetic chain with exchange interaction and classical magnetic moment interaction. In this chain there are both traveling and stationary quantum solilary waves. With the help of the obtained quantum solitary wave solution, the energy levels and magnetic moments of the quantum solitary wave have been investigated further. It is shown that the energy and magnetic moments of the quantum solitary wave are quantized. These novel results provide a possible way for understanding macroscopic quantum effects such as quantum steps of the hysteresis loop in magnetic materials. |
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| Keywords: | one-dimensional ferromagnetic chain quantum solitary wave energy level magnetic moment |
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