Zero-field edge plasmons in a magnetic topological insulator

doi:10.1038/s41467-017-01984-5

	Zero-field edge plasmons in a magnetic topological insulator
	Mahoney, Alice C.1; Colless, James I.1,6; Peeters, Lucas 2; Pauka, Sebastian J.1; Fox, Eli J.2,3; Kou, Xufeng4,7 ; Pan, Lei 4; Wang, Kang L.4; Goldhaber-Gordon, David 2,3; Reilly, David J.1,5
	2017-11-28
发表期刊	NATURE COMMUNICATIONS
ISSN	2041-1723
卷号	8
发表状态	已发表
DOI	10.1038/s41467-017-01984-5
摘要	Incorporating ferromagnetic dopants into three-dimensional topological insulator thin films has recently led to the realisation of the quantum anomalous Hall effect. These materials are of great interest since they may support electrical currents that flow without resistance, even at zero magnetic field. To date, the quantum anomalous Hall effect has been investigated using low-frequency transport measurements. However, transport results can be difficult to interpret due to the presence of parallel conductive paths, or because additional non-chiral edge channels may exist. Here we move beyond transport measurements by probing the microwave response of a magnetised disk of Cr-(Bi,Sb)(2)Te-3. We identify features associated with chiral edge plasmons, a signature that robust edge channels are intrinsic to this material system. Our results provide a measure of the velocity of edge excitations without contacting the sample, and pave the way for an on-chip circuit element of practical importance: the zero-field microwave circulator.
收录类别	SCI
语种	英语
资助项目	Gordon and Betty Moore Foundation[GBMF3429]
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000416399700009
出版者	NATURE PUBLISHING GROUP
WOS关键词	LOW-FREQUENCY ; HALL ; MAGNETOPLASMONS ; REALIZATION ; STATE
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/14279
专题	信息科学与技术学院_PI研究组_寇煦丰组
通讯作者	Goldhaber-Gordon, David; Reilly, David J.
作者单位	1.Univ Sydney, ARC Ctr Excellence Engn Quantum Syst, Sch Phys, Sydney, NSW 2006, Australia 2.Stanford Univ, Dept Phys, Stanford, CA 94305 USA 3.SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA 4.Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA 5.Microsoft Stn Q Sydney, Sydney, NSW 2006, Australia 6.Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA 7.ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai 201210, Peoples R China
推荐引用方式 GB/T 7714	Mahoney, Alice C.,Colless, James I.,Peeters, Lucas,et al. Zero-field edge plasmons in a magnetic topological insulator[J]. NATURE COMMUNICATIONS,2017,8.
APA	Mahoney, Alice C..,Colless, James I..,Peeters, Lucas.,Pauka, Sebastian J..,Fox, Eli J..,...&Reilly, David J..(2017).Zero-field edge plasmons in a magnetic topological insulator.NATURE COMMUNICATIONS,8.
MLA	Mahoney, Alice C.,et al."Zero-field edge plasmons in a magnetic topological insulator".NATURE COMMUNICATIONS 8(2017).