Properties of A Class of Topological Phase Transition

Autor:	Cai, Zi, Chen, Shu, Kou, Supeng, Wang, Yupeng
Rok vydání:	2008
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Strongly Correlated Electrons
Zdroj:	Phys. Rev. B 78, 035123 (2008)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.78.035123
Popis:	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. Comment: 7 pages, 7 figures. Accepted by Phys. Rev. B
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0805.2357 Zobrazit plný text záznamu View this record from Arxiv