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 Shaojun Dong;Hao Zhang;Chao Wang;Meng Zhang;Yong-Jian Han;Lixin He

作者机构：Institute of Artificial IntelligenceHefei Comprehensive National Science CenterHefei 230088China CAS Key Laboratory of Quantum InformationUniversity of Science and Technology of ChinaHefei 230026China Synergetic Innovation Center of Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaHefei 230026China Hefei National LaboratoryUniversity of Science and Technology of ChinaHefei 230088China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2023年第40卷第12期

页      面：109-113页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

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) 

主　　题：transition method Hubbard 

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.