Study on the Magnetic Property of Low Dimension Topological Insulator
Abstract: Quantum spin hall effect (QSHE) is intrinsic phenomena in the topological insulator (HgTe). We investigate the energy spectrum of low dimension HgTe topological insulator with different structure under the magnetic field. Then we find that the square topological insulator quantum dot (TIQD) and disk-like TIQD both have edge states without magnetic field, and these edge states is very stable structure property. But there is quantum hall effect in the presence of external magnetic field; namely the edge states of HgTe QD all will be affected under magnetic field; espe-cially the electrons will move toward the same direction along the edge of disk-like HgTe QD under magnetic field. The main reason of all these physical phenomena is that the magnetic field breaks the time reversal symmetry.
文章引用: 严萍兰 , 李晓静 (2015) 低维拓扑绝缘体磁特性研究。 凝聚态物理学进展， 4， 25-33. doi: 10.12677/CMP.2015.42004
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