Properties of A Class of Topological Phase Transition

Details Properties of A Class of Topological Phase Transition Properties of A Class of Topological Phase Transition

2008-05-15

arxiv.org/abs/0805.2357v1

Phys. Rev. B 78, 035123 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 7 figures. Accepted by Phys. Rev. B

Scientific paper

10.1103/PhysRevB.78.035123

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 difference 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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