Quantum phase transitions in two-dimensional strongly correlated fermion systems

作     者：保安 陈耀华 林恒福 刘海迪 章晓中 

作者机构：Laboratory of Advanced Materials School of Materials Science and Engineering Tsinghua University Beijing 100084 China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China Key Laboratory of Integrated Exploitation of Bayan-Obo Multi-Metal Resources Inner Mongolia University of Science&Technology Baotou 014010 China 

出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)

年 卷 期：2015年第10卷第5期

页      面：7-26页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：I am so grateful for the great contribu- tions and beneficial communications from Yao-Hua Chen  Hai-Di Liu  and Heng-Fu Lin while I am preparing this review paper. This work was supported by the National Science Foundation of China (Grant Nos. 11174169  11234007  and 51471093) 

主　　题：quantum phase transition two-dimensional lattices fermions cellular dynamicalmean-field theory continuous-time quantum Monte Carlo 

摘      要：In this article, we review our recent work on quantum phase transition in two-dimensional strongly correlated fermion systems. We discuss the metal insulator transition properties of these systems by calculating the density of states, double occupancy, and Fermi surface evolution using a com- bination of the cellular dynamical mean-field theory （CDMFT） and the continuous-time quantum Monte Carlo algorithm. Furthermore, we explore the magnetic properties of each state by defining magnetic order parameters. Rich phase diagrams with many intriguing quantum states, including antiferromagnetic metal, paramagnetic metal, Kondo metal, and ferromagnetic insulator, were found for the two-dimensional lattices with strongly correlated fermions. We believe that our results would lead to a better understanding of the properties of real materials.