Spinon Fermi Surface Spin Liquid in a Triangular Lattice Antiferromagnet NaYbSe2

doi:10.1103/PhysRevX.11.021044

	Spinon Fermi Surface Spin Liquid in a Triangular Lattice Antiferromagnet NaYbSe2
	Dai, Peng-Ling 1,2; Zhang, Gaoning3 ; Xie, Yaofeng 4; Duan, Chunruo 4; Gao, Yonghao 5; Zhu, Zihao 5; Feng, Erxi 6; Tao, Zhen 1,2; Huang, Chien-Lung 4; Cao, Huibo 6; Podlesnyak, Andrey 6; Granroth, Garrett E.6; Everett, Michelle S.6; Neuefeind, Joerg C.6; Voneshen, David 7,8; Wang, Shun 9; Tan, Guotai 1,2; Morosan, Emilia 4; Wang, Xia3 ; Lin, Hai-Qing 10; Shu, Lei 5; Chen, Gang5,11,12 ; Guo, Yanfeng3 ; Lu, Xingye 1,2; Dai, Pengcheng 4
	2021
发表期刊	PHYSICAL REVIEW X
ISSN	2160-3308
卷号	11 期号:2
DOI	10.1103/PhysRevX.11.021044
摘要	Triangular lattice of rare-earth ions with interacting effective spin-1/2 local moments is an ideal platform to explore the physics of quantum spin liquids (QSLs) in the presence of strong spin-orbit coupling, crystal electric fields, and geometrical frustration. The Yb delafossites, NaYbCh(2) (Ch = O, S, Se) with Yb ions forming a perfect triangular lattice, have been suggested to be candidates for QSLs. Previous thermodynamics, nuclear magnetic resonance, and powder-sample neutron scattering measurements on NaYbCh(2) have supported the suggestion of the QSL ground states. The key signature of a QSL, the spin excitation continuum, arising from the spin quantum number fractionalization, has not been observed. Here we perform both elastic and inelastic neutron scattering measurements as well as detailed thermodynamic measurements on high-quality single-crystal NaYbSe2 samples to confirm the absence of long-range magnetic order down to 40 mK, and further reveal a clear signature of magnetic excitation continuum extending from 0.1 to 2.5 meV. The comparison between the structure of the magnetic excitation spectra and the theoretical expectation from the spinon continuum suggests that the ground state of NaYbSe2 is a QSL with a spinon Fermi surface.
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收录类别	SCIE ; EI
语种	英语
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000655929500001
出版者	AMER PHYSICAL SOC
原始文献类型	Article
引用统计	被引频次：86[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/126996
专题	物质科学与技术学院_硕士生物质科学与技术学院_PI研究组_陈刚组物质科学与技术学院_PI研究组_郭艳峰组物质科学与技术学院_公共科研平台_分析测试平台
通讯作者	Chen, Gang
作者单位	1.Beijing Normal Univ, Ctr Adv Quantum Studies, Beijing 100875, Peoples R China; 2.Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China; 3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China; 4.Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA; 5.Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China; 6.Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37831 USA; 7.Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England; 8.Royal Holloway Univ London, Dept Phys, Egham TW20 0EX, Surrey, England; 9.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China; 10.Beijing Computat Sci Res Ctr, Beijing 100094, Peoples R China; 11.Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China; 12.Univ Hong Kong, HKU UCAS Joint Inst Theoret & Computat Phys Hong, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Dai, Peng-Ling,Zhang, Gaoning,Xie, Yaofeng,et al. Spinon Fermi Surface Spin Liquid in a Triangular Lattice Antiferromagnet NaYbSe2[J]. PHYSICAL REVIEW X,2021,11(2).
APA	Dai, Peng-Ling.,Zhang, Gaoning.,Xie, Yaofeng.,Duan, Chunruo.,Gao, Yonghao.,...&Dai, Pengcheng.(2021).Spinon Fermi Surface Spin Liquid in a Triangular Lattice Antiferromagnet NaYbSe2.PHYSICAL REVIEW X,11(2).
MLA	Dai, Peng-Ling,et al."Spinon Fermi Surface Spin Liquid in a Triangular Lattice Antiferromagnet NaYbSe2".PHYSICAL REVIEW X 11.2(2021).