| Kondo 绝缘体的能隙形成机制 |
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| 引用本文： | 冯小兵.Kondo 绝缘体的能隙形成机制[J].大连铁道学院学报,1997(4). |
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| 作者姓名： | 冯小兵 |
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| 作者单位： | 大连铁道学院基础科学部 |
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| 摘 要： | 采用格林函数退耦合方法研究了非对称周期性Ａｎｄｅｒｓｏｎ模型．结果表明，在相干区随杂化作用的增强体系有能隙产生，且能隙具有较强的温度依赖．体系的磁化率随温度非单调变化．上述结果与Ｋｏｎｄｏ绝缘体的行为一致．
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| 关 键 词： | 绝缘体 能隙 磁化率 |
Mechanism of Gap Formation in Kondo Insulators |
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| FengXiaobing.Mechanism of Gap Formation in Kondo Insulators[J].Journal of Dalian Railway Institute,1997(4). |
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| Authors: | FengXiaobing |
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| Institution: | Dep. of Basic Science |
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| Abstract: | Studies the asymmetric periodic Anderson model. The results show that in the coherence regime a gap is formed when the hybridization interaction is enhanced. Energy gap has a strong temperature dependence and the magnetic susceptibility varies nonmonotonically with temperatures. The seresults are consistent with Kondo insulators. |
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| Keywords: | insulator energy gap magnetic susceptibility |
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