Topological Quantum Phase Transitions of Anisotropic Antiferromagnetic Kitaev Model Driven by Magnetic Field

doi:10.1002/andp.202200012

	Topological Quantum Phase Transitions of Anisotropic Antiferromagnetic Kitaev Model Driven by Magnetic Field
	Jia, Shi-Qing 1,4; Quan, Ya-Min 1; Zou, Liang-Jian 1,4; Lin, Hai-Qing 2,3
刊名	ANNALEN DER PHYSIK
	2022-05-11
关键词	anisotropic antiferromagnetic Kitaev model magnetic field effects quantum spin liquids topological quantum phase transitions
ISSN号	0003-3804
DOI	10.1002/andp.202200012
通讯作者	Zou, Liang-Jian(zou@theory.issp.ac.cn) ; Lin, Hai-Qing(haiqing0@csrc.ac.cn)
英文摘要	The evolution of quantum spin liquid states (QSL) of the anisotropic antiferromagnetic (AFM) Kitaev model with the [001] magnetic field by utilizing the finite-temperature Lanczos method (FTLM) is investigated. In this anisotropic Kitaev model with KX=KY$K_{X}=K_{Y}$ and KX+KY+KZ=-3K$K_{X}+K_{Y}+K_{Z}=-3\text{ K}$ (K is the energy unit), due to the competition between anisotropy and magnetic field, the system emerges four exotic quantum phase transitions (QPTs) when KZ=-1.8$K_{Z}=-1.8$ and -1.4K$-1.4\text{ K}$, while only two QPTs when KZ=-0.6K$K_Z=-0.6\text{ K}$. At these magnetic-field tuning quantum phase transition points, the low-energy excitation spectrums appear level crossover, and the specific heat, magnetic susceptibility and Wilson ratio display anomalies; accordingly, the topological Chern number may also change. These results demonstrate that the anisotropic interacting Kitaev model with modulating magnetic field displays more rich phase diagrams, in comparison with the isotropic Kitaev model.
资助项目	NSFC of China[11774350] ; NSFC of China[11474287] ; NSAF[U1930402] ; NSFC[11734002]
WOS关键词	SPIN LIQUID
WOS研究方向	Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000793256500001
资助机构	NSFC of China ; NSAF ; NSFC
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130845]
专题	中国科学院合肥物质科学研究院
通讯作者	Zou, Liang-Jian; Lin, Hai-Qing
作者单位	1.Chinese Acad Sci, HFIPS, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China 3.Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China 4.Univ Sci & Technol China, Sci Isl Branch, Grad Sch, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Jia, Shi-Qing,Quan, Ya-Min,Zou, Liang-Jian,et al. Topological Quantum Phase Transitions of Anisotropic Antiferromagnetic Kitaev Model Driven by Magnetic Field[J]. ANNALEN DER PHYSIK,2022.
APA	Jia, Shi-Qing,Quan, Ya-Min,Zou, Liang-Jian,&Lin, Hai-Qing.(2022).Topological Quantum Phase Transitions of Anisotropic Antiferromagnetic Kitaev Model Driven by Magnetic Field.ANNALEN DER PHYSIK.
MLA	Jia, Shi-Qing,et al."Topological Quantum Phase Transitions of Anisotropic Antiferromagnetic Kitaev Model Driven by Magnetic Field".ANNALEN DER PHYSIK (2022).