A Possible Quantum Spin Liquid Phase in the Kitaev–Hubbard Model  

作　　者：Shaojun Dong Hao Zhang Chao Wang Meng Zhang Yong-Jian Han Lixin He 

机构地区：[1]Institute of Artificial Intelligence,Hefei Comprehensive National Science Center,Hefei 230088,China [2]CAS Key Laboratory of Quantum Information,University of Science and Technology of China,Hefei 230026,China [3]Synergetic Innovation Center of Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China [4]Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China

出　　处：《Chinese Physics Letters》2023年第12期109-113,共5页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 12104433 and 11874343);the Innovation Program for Quantum Science and Technology (Grant No. 2021ZD0301200)。

摘　　要：The quantum spin liquid(QSL) state of Kitaev-like materials, such as iridium oxides A_(2)IrO_(3) and α-RuCl_(3),has been explored in depth. The half-filled Kitaev–Hubbard model with bond-dependent hopping terms is used to describe the Kitaev-like materials, which is calculated using the state-of-the-art fermionic projected entangled pair states method. We find a QSL phase near the Mott insulator transition, which has a strong first-order transition to the semi-metal phase with the decrease of Hubbard U. We suggest that a promising approach to finding QSL states is by finding iridium oxides that are near the Mott insulator transition.

关 键 词：TRANSITION METHOD HUBBARD 

分 类 号：O413[理学—理论物理]