Flux-driven quantum phase transitions in two-leg Kitaev ladder topological superconductor systems
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- 作者：H.Q. Wang nicholas2685@126.com" class="auth_mail" title="E-mail the corresponding author ; L.B. Shao ; Y.M. Pan ; R. Shen ; L. Sheng ; D.Y. Xing ; dyxing@nju.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Kitaev ladder topological superconductor ; Uniform (staggered) flux ; Quantum phase transition
- 刊名：Physics Letters A
- 出版年：2016
- 出版时间：1 December 2016
- 年：2016
- 卷：380
- 期：46
- 页码：3936-3941
- 全文大小：1109 K
文摘
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Uniform or staggered fluxes are applied to drive quantum phase transitions in the two-leg Kitaev ladder topological superconductor system.
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Flux-dependent phase diagram is derived by use of symmetry analysis and calculation of topological invariants.
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The number of Majorana zero energy states can be manipulated by simply tuning uniform or staggered fluxes.
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Energy spectrum, entanglement spectrum and local density of states are used to numerically verify the phase transitions.