Quantum spin liquid with emergent chiral order in the triangular-lattice Hubbard model

doi:10.1103/PhysRevB.106.094420

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	Quantum spin liquid with emergent chiral order in the triangular-lattice Hubbard model
	Chen, Bin-Bin ; Chen, Ziyu ; Gong, Shou-Shu ; Sheng, D. N.; Li, Wei 5; Weichselbaum, Andreas 1,6,7
刊名	PHYSICAL REVIEW B
	2022
卷号	106 期号:9 页码:94420
关键词	RESONATING-VALENCE-BOND STATE
ISSN号	2469-9950
DOI	10.1103/PhysRevB.106.094420
英文摘要	The interplay between spin frustration and charge fluctuation gives rise to an exotic quantum state in the intermediate-interaction regime of the half-filled triangular-lattice Hubbard model, while the nature of the state is under debate. Using the density matrix renormalization group with SU(2)(spin) circle times U(1)(charge) symmetries implemented, we study the triangular-lattice Hubbard model defined on the long cylinder geometry up to circumference W = 6. A gapped quantum spin liquid, with on-site interaction 9 less than or similar to U/t less than or similar to 10.75, is identified between the metallic and the antiferromagnetic Mott insulating phases. In particular, we find that this spin liquid develops a robust long-range spin scalar-chiral correlation as the system length L increases, which unambiguously unveils the spontaneous time-reversal symmetry breaking. In addition, the degeneracy of the entanglement spectrum supports symmetry fractionalization and spinon edge modes in the obtained ground state. The possible origin of chiral order in this intermediate spin liquid and its relation to the rotonlike excitations have also been discussed.
学科主题	Materials Science ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27839]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Ludwig Maximilians Univ Munchen, Ctr NanoSci, Arnold Sommerfeld Ctr Theoret Phys, D-80333 Munich, Germany 2.Ludwig Maximilians Univ Munchen, Munich Ctr Quantum Sci & Technol, D-80333 Munich, Germany 3.Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Peoples R China 4.Univ Hong Kong, HKU UCAS Joint Inst Theoret & Computat Phys, Pokfulam Rd, Hong Kong, Peoples R China 5.Sheng, D. N.] Calif State Univ Northridge, Dept Phys & Astron, Northridge, CA 91330 USA 6.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 7.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China 8.Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA
推荐引用方式 GB/T 7714	Chen, Bin-Bin,Chen, Ziyu,Gong, Shou-Shu,et al. Quantum spin liquid with emergent chiral order in the triangular-lattice Hubbard model[J]. PHYSICAL REVIEW B,2022,106(9):94420.
APA	Chen, Bin-Bin,Chen, Ziyu,Gong, Shou-Shu,Sheng, D. N.,Li, Wei,&Weichselbaum, Andreas.(2022).Quantum spin liquid with emergent chiral order in the triangular-lattice Hubbard model.PHYSICAL REVIEW B,106(9),94420.
MLA	Chen, Bin-Bin,et al."Quantum spin liquid with emergent chiral order in the triangular-lattice Hubbard model".PHYSICAL REVIEW B 106.9(2022):94420.