| 二维带电自旋-1/2费米气体的磁性质 |
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| 引用本文： | 李宏,刘红艳,王磊,李玉山.二维带电自旋-1/2费米气体的磁性质[J].原子与分子物理学报,2017,34(3):577-580. |
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| 作者姓名： | 李宏 刘红艳 王磊 李玉山 |
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| 作者单位： | 淮北师范大学物理与电子信息学院,菏泽学院,菏泽学院,菏泽学院 |
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| 摘 要： | 通过引入描述电荷-磁场和自旋-磁场相互作用竞争关系的自旋因子,研究了磁场和简谐势阱双重约束的二维带电自旋-1/2费米气体的磁性质.结果表明,当自旋因子很小时,系统显示出抗磁性,随着自旋因子的进一步增大,系统逐渐转变为顺磁性.自旋因子的临界值将磁化强度划分为抗磁性区和顺磁性区,临界值随磁场和温度的增大仅发生微小的改变.
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| 关 键 词： | 抗磁 顺磁 自旋 费米气体 |
| 收稿时间： | 2016/11/30 0:00:00 |
| 修稿时间： | 2016/12/14 0:00:00 |
Magnetic properties of two-dimensional charged spin-1/2 Fermi gases |
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| Li Hong,Liu Hong-Yan,Wang Lei and Li Yu-Shan.Magnetic properties of two-dimensional charged spin-1/2 Fermi gases[J].Journal of Atomic and Molecular Physics,2017,34(3):577-580. |
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| Authors: | Li Hong Liu Hong-Yan Wang Lei and Li Yu-Shan |
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| Abstract: | The magnetic properties of two-dimensional charged spin-1/2 Fermi gases confined in magnetic field and harmonic potential have been studied by introducing a spin factor which describes the competition between charge-magnetic field and spin-magnetic field interactions. It is suggested that the system presents dia-magnetism with a small spin factor, and gradually exhibits para-magnetism as the increasing of spin factor. The magnetism is separated into diamagnetic and paramagnetic regions by the critical value of spin factor which has a tiny change as the magnetic field and temperature increase. |
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| Keywords: | Diamagnetic Paramagnetic Spin Fermi gases |
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