Evidence for a spinon Kondo effect in cobalt atoms on single-layer 1T-TaSe2

doi:10.1038/s41567-022-01751-4

	Evidence for a spinon Kondo effect in cobalt atoms on single-layer 1T-TaSe2
	Chen, Yi 1,2,3,4; He, Wen-Yu5,6 ; Ruan, Wei 1,2,7,8; Hwang, Jinwoong 9,10,11,12; Tang, Shujie 9,10,11,13,14,15; Lee, Ryan L.1,16,17; Wu, Meng 1,2; Zhu, Tiancong 1,2; Zhang, Canxun 1,2,18,19; Ryu, Hyejin 9,20; Wang, Feng 1,2,18,19; Louie, Steven G.1,2; Shen, Zhi-Xun 10,11,13,14; Mo, Sung-Kwan 9; Lee, Patrick A.5; Crommie, Michael F.1,2,18,19
	2022-11
发表期刊	NATURE PHYSICS (IF:17.6[JCR-2023],19.3[5-Year])
ISSN	1745-2473
EISSN	1745-2481
发表状态	已发表
DOI	10.1038/s41567-022-01751-4
摘要	["Quantum spin liquids are highly entangled, disordered magnetic states that are expected to arise in frustrated Mott insulators and to exhibit exotic fractional excitations such as spinons and chargons. Despite being electrical insulators, some quantum spin liquids are predicted to exhibit gapless itinerant spinons that yield metallic behaviour in the charge-neutral spin channel. We deposited isolated magnetic atoms onto single-layer 1T-TaSe2, a candidate gapless spin liquid, to probe how itinerant spinons couple to impurity spin centres. Using scanning tunnelling spectroscopy, we observe the emergence of new, impurity-induced resonance peaks at the 1T-TaSe2 Hubbard band edges when cobalt adatoms are positioned to have maximal spatial overlap with the local charge distribution. These resonance peaks disappear when the spatial overlap is reduced or when the magnetic impurities are replaced with nonmagnetic impurities. Theoretical simulations of a modified Anderson impurity model show that the observed peaks are consistent with a Kondo resonance induced by spinons combined with spin-charge binding effects that arise due to fluctuations of an emergent gauge field.","Unconventional quasiparticles carrying spin but not electric charge emerge in quantum spin liquid phases. The Kondo interaction of these spinon quasiparticles with magnetic impurities may now have been observed."]
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收录类别	SCI ; EI ; SCIE
语种	英语
资助项目	National Science Foundation["DMR-2221750","DMR-1926004"] ; DOE Basic Energy Science[DE-FG02-03ER46076] ; National Research Foundation of Korea - government of Korea (MSIT)[2021R1A2C2014179] ; Shanghai Science and Technology Development Funds[22QA1400600] ; Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the US Department of Energy[DE-AC02-05CH11231]
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000863144600003
出版者	NATURE PORTFOLIO
引用统计	被引频次：34[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/238159
专题	物质科学与技术学院_PI研究组_贺文宇
通讯作者	Crommie, Michael F.
作者单位	1.Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA 2.Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA 3.Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing, Peoples R China 4.Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China 5.MIT, Dept Phys, Cambridge, MA 02139 USA 6.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China 7.Fudan Univ, State Key Lab Surface Phys, Shanghai, Peoples R China 8.Fudan Univ, Dept Phys, Shanghai, Peoples R China 9.Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA USA 10.Stanford Inst Mat & Energy Sci, SLAC Natl Accelerator Lab, Menlo Pk, CA USA 11.Stanford Univ, Menlo Pk, CA USA 12.Kangwon Natl Univ, Dept Phys, Chunchon, South Korea 13.Stanford Univ, Dept Phys, Geballe Lab Adv Mat, Stanford, CA 94305 USA 14.Stanford Univ, Dept Appl Phys, Geballe Lab Adv Mat, Stanford, CA 94305 USA 15.Chinese Acad Sci, CAS Ctr Excellence Superconducting Elect, Shanghai Inst Microsyst & Informat Technol, Shanghai, Peoples R China 16.Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA 17.Princeton Univ, Dept Phys, Princeton, NJ 08544 USA 18.Univ Calif Berkeley, Kavli Energy Nano Sci Inst, Berkeley, CA 94720 USA 19.Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA 20.Korea Inst Sci & Technol, Ctr Spintron, Seoul, South Korea
推荐引用方式 GB/T 7714	Chen, Yi,He, Wen-Yu,Ruan, Wei,et al. Evidence for a spinon Kondo effect in cobalt atoms on single-layer 1T-TaSe2[J]. NATURE PHYSICS,2022.
APA	Chen, Yi.,He, Wen-Yu.,Ruan, Wei.,Hwang, Jinwoong.,Tang, Shujie.,...&Crommie, Michael F..(2022).Evidence for a spinon Kondo effect in cobalt atoms on single-layer 1T-TaSe2.NATURE PHYSICS.
MLA	Chen, Yi,et al."Evidence for a spinon Kondo effect in cobalt atoms on single-layer 1T-TaSe2".NATURE PHYSICS (2022).