Towards large-Chern-number topological phases by periodic quenching
Towards large-Chern-number topological phases by periodic quenching
复制标题
通过周期性猝灭实现大陈数拓扑相
DOI:
10.1103/physrevb.93.184306
复制
发表时间:
2016-01
影响因子:
3.7
通讯作者:
An Jun-Hong
中科院分区:
文献类型:
--
作者:
Xiong Tian-Shi;Gong Jiangbin;An Jun-Hong
Topological phases with large Chern numbers have important implications. They were previously predicted to exist by considering fabricated long-range interactions or multilayered materials. Stimulated by recent wide interests in Floquet topological phases, here we propose a scheme to engineer large-Chern-number phases with ease by periodic quenching. Using a two-band system as an example, we theoretically show how a variety of topological phases with widely tunable Chern numbers can be generated by periodic quenching between two simple Hamiltonians that otherwise give low Chern numbers. The obtained large Chern numbers are explained through the emergence of multiple Dirac cones in the Floquet spectra. The transition lines between different topological phases in the two-band model are also explicitly found, thus establishing a class of easily solvable but very rich systems useful for further understandings and applications of topological phases in periodically driven systems.
DOI:
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发表时间:
--
期刊:
--
影响因子:
--
作者:
J. S. Milne
通讯作者:
J. S. Milne
DOI:
10.1515/9781400846733
发表时间:
2013-04
期刊:
--
影响因子:
--
作者:
B. Bernevig
通讯作者:
B. Bernevig
DOI:
10.1016/0030-3992(80)90094-8
发表时间:
1997
期刊:
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影响因子:
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作者:
G. Cuniberti;G. Fagas;K. Richter;Cuniberti Fagas;Richter;K. von Klitzing;P. Hänggi;S. Kohler-S.-K
通讯作者:
G. Cuniberti;G. Fagas;K. Richter;Cuniberti Fagas;Richter;K. von Klitzing;P. Hänggi;S. Kohler-S.-K