Topological phase transition independent of system non-Hermiticity
Topological phase transition independent of system non-Hermiticity
复制标题
拓扑相变与系统非厄米性无关
DOI:
10.1103/physrevb.100.045141
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发表时间:
2019-05
影响因子:
3.7
通讯作者:
Zhi Song
中科院分区:
文献类型:
--
作者:
K. L. Zhang;H. C. Wu;Liang Jin;Zhi Song
Non-Hermiticity can vary the topology of system, induce topological phase transitions, and even invalidate the conventional bulk-boundary correspondence. Here, we show the introduction of non-Hermiticity without affecting the topological properties of the original chiral symmetric Hermitian systems. Conventional bulk-boundary correspondence holds; the topological phase transition and the (non)existence of edge states are unchanged even though the energy bands are inseparable due to non-Hermitian phase transitions. The Chern number for energy bands of the generalized non-Hermitian system in two dimensions is proved to be unchanged and favorably coincides with the simulated topological charge pumping. Our findings provide insights into the interplay between non-Hermiticity and topology. A topological phase transition independent of the non-Hermitian phase transition is a unique feature that is beneficial for future applications of non-Hermitian topological materials.
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影响因子:
3.7
作者:
Chun-hui Liu;Hui Jiang;Shu Chen
通讯作者:
Chun-hui Liu;Hui Jiang;Shu Chen
影响因子:
4.6
作者:
K.L.Zhang;P.Wang;Z.Song
通讯作者:
Z.Song
影响因子:
3.7
作者:
Lin S.;Jin L.;Song Z.
通讯作者:
Song Z.
影响因子:
2.9
作者:
Jin, L.
通讯作者:
Jin, L.
影响因子:
3.7
作者:
A. Zyuzin;A. Zyuzin;A. Zyuzin
通讯作者:
A. Zyuzin;A. Zyuzin;A. Zyuzin