| 1维格子组成环形带绝缘体上的持续电流 |
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| 引用本文： | 罗国忠.1维格子组成环形带绝缘体上的持续电流[J].河南师范大学学报(自然科学版),2013,41(4):59-62,108. |
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| 作者姓名： | 罗国忠 |
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| 作者单位： | 忻州师范学院物理系,山西忻州,034000 |
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| 摘 要： | 通过磁通的介观正常金属环存在持续电流.最近,有人指出在由能带绝缘体制成的环中也存在持续电流,持续电流是由完全占满价带的电子产生的.用环形1维格子的布洛赫态组成1维环的电子态的方法,研究了环形能带绝缘体组成的环里的持续电流,推导出了由任意价带的绝缘体组成的1维环中的持续电流.
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| 关 键 词： | 环形带 持续电流 1维格子 布洛赫态 |
Persistent Current in a Ring-Shaped Insulator Composed of One-dimension Lattice for Arbitrary Energy Band |
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| LUO Guozhong.Persistent Current in a Ring-Shaped Insulator Composed of One-dimension Lattice for Arbitrary Energy Band[J].Journal of Henan Normal University(Natural Science),2013,41(4):59-62,108. |
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| Authors: | LUO Guozhong |
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| Institution: | LUO Guozhong(Department of Physics,Xinzhou Teachers University,Xinzhou 034000,China) |
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| Abstract: | It is well known that a mesoscopic normal metal ring pierced by the magnetic flux support the persistent current.Recently,It has been pointed out that the persistent current exists also in a ring made of the band insulator,where it is carried solely by electrons in the fully occupied valence band.The paper mainly studies persistent current in the ring composed of ring-shaped band insulator and formulates the recipe which determines the electron states in the one-dimensional(1D)ring from the Bloch states of the infinite 1Dlattice obtained by periodic repetition of the ring with this method,we derive the persistent current in the 1Dring made of insulator with an arbitrary valence band |
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| Keywords: | ring-shaped band persistent current ID lattice Bloch states |
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