Majorana flat band edge modes of topological gapless phase in 2D Kitaev square lattice
Majorana flat band edge modes of topological gapless phase in 2D Kitaev square lattice
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二维Kitaev方晶格中拓扑无间隙相的马约拉纳平带边缘模式
DOI:
10.1038/s41598-019-41529-y
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发表时间:
2018-11
影响因子:
4.6
通讯作者:
Z.Song
中科院分区:
文献类型:
--
作者:
K.L.Zhang;P.Wang;Z.Song
We study a Kitaev model on a square lattice, which describes topologically trivial superconductor when gap opens, while supports topological gapless phase when gap closes. The degeneracy points are characterized by two vortices in momentum space, with opposite winding numbers. We show rigorously that the topological gapless phase always hosts a partial Majorana flat band edge modes in a ribbon geometry, although such a single band model has zero Chern number as a topologically trivial superconductor. The flat band disappears when the gapless phase becomes topologically trivial, associating with the mergence of two vortices. Numerical simulation indicates that the flat band is robust against the disorder.
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影响因子:
4.6
作者:
Wang P;Lin S;Zhang G;Song Z
通讯作者:
Song Z
影响因子:
56.9
作者:
Nadj-Perge, Stevan;Drozdov, Ilya K.;Yazdani, Ali
通讯作者:
Yazdani, Ali
DOI:
--
发表时间:
2015-02
期刊:
arXiv: Materials Science
影响因子:
--
作者:
B. Lv;H. Weng;B. Fu;X. P. Wang;H. Miao;Junzhang Ma;P. Richard;Xiaochun Huang;Lingxiao Zhao;Genfu Chen;Z. Fang;X. Dai;T. Qian;H. Ding
通讯作者:
B. Lv;H. Weng;B. Fu;X. P. Wang;H. Miao;Junzhang Ma;P. Richard;Xiaochun Huang;Lingxiao Zhao;Genfu Chen;Z. Fang;X. Dai;T. Qian;H. Ding
影响因子:
3.7
作者:
Wang, Zhijun;Sun, Yan;Fang, Zhong
通讯作者:
Fang, Zhong
影响因子:
56.9
作者:
Xu, Su-Yang;Belopolski, Ilya;Hasan, M. Zahid
通讯作者:
Hasan, M. Zahid