Kondo Effect Mediated Topological Protection: Co on Sb(111)

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	Kondo Effect Mediated Topological Protection: Co on Sb(111)
	Yu, YH ; She, LM ; Fu, HX ; Huang, M ; Li, H ; Meng, S ; Cao, GY
刊名	ACS NANO
	2014
卷号	8 期号:11 页码:11576
关键词	topological surface states Sb(111) Kondo effect quasiparticle interference time reversal symmetry
ISSN号	1936-0851
通讯作者	Li, H (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	We report on a Kondo effect on Co/Sb(111) mediating topological protection of the surface states against local magnetic perturbations. A sharp scanning tunneling spectroscopic peak near the Fermi energy is interpreted as a fingerprint of the Kondo resonance with a high Kondo temperature of about 200 K. Density function theory calculations reveal that the protruding Co adatoms are responsible for the Kondo peak, while the Co atoms underneath present as nonmagnetic impurities. By identifying the quasiparticle interference wavevectors, we demonstrate that only scattering channels related to backscattering confinements are observed for surfaces with and without the Co adsorption. It suggests that the Kondo effect suppresses the backscattering of the topological surface states and may help to expand the functionality of magnetically coupled topological materials for spintronics applications.
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/58789]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Yu, YH,She, LM,Fu, HX,et al. Kondo Effect Mediated Topological Protection: Co on Sb(111)[J]. ACS NANO,2014,8(11):11576.
APA	Yu, YH.,She, LM.,Fu, HX.,Huang, M.,Li, H.,...&Cao, GY.(2014).Kondo Effect Mediated Topological Protection: Co on Sb(111).ACS NANO,8(11),11576.
MLA	Yu, YH,et al."Kondo Effect Mediated Topological Protection: Co on Sb(111)".ACS NANO 8.11(2014):11576.