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期刊论文

Properties of A Class of Topological Phase Transition

寇谡鹏Zi Cai Shu Chen Supeng Kou and Yupeng Wang

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摘要/描述

The properties of a class of topological quantum phase transition (TQPT) are analyzed based on a model proposed by Haldane. We study the effect of finite temperature on this phase transition. We have found that finite temperature would drive this TQPT to be a crossover, while it is stable against the weak short range interaction. When the interaction is strong enough, however, this TQPT is unstable and other states would emerge. Then we investigate the effect of the on-site energy in the original haldane model. The critical di erence between our TQPT and the topological phase transition in conventional quantum Hall system is discussed. Finally, we discuss the potential application of our analysis to a topological phase transition proposed in a realistic system.

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版权说明:以下全部内容由寇谡鹏上传于   2010年01月04日 14时26分22秒,版权归本人所有。

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