Dynamical Negative Differential Resistance in Antiferromagnetically Coupled Few-Atom Spin Chains

doi:10.1103/PhysRevLett.119.217201

	Dynamical Negative Differential Resistance in Antiferromagnetically Coupled Few-Atom Spin Chains
	Rolf-Pissarczyk, Steffen 1,2; Yan, Shichao1,2,3 ; Malavolti, Luigi 1,2; Burgess, Jacob A. J.1,2,4; McMurtrie, Gregory 1,2; Loth, Sebastian 1,2,5
	2017-11-21
发表期刊	PHYSICAL REVIEW LETTERS
ISSN	0031-9007
卷号	119 期号:21
发表状态	已发表
DOI	10.1103/PhysRevLett.119.217201
摘要	We present the appearance of negative differential resistance (NDR) in spin-dependent electron transport through a few-atom spin chain. A chain of three antiferromagnetically coupled Fe atoms (Fe trimer) was positioned on a Cu2N/Cu(100) surface and contacted with the spin-polarized tip of a scanning tunneling microscope, thus coupling the Fe trimer to one nonmagnetic and one magnetic lead. Pronounced NDR appears at the low bias of 7 mV, where inelastic electron tunneling dynamically locks the atomic spin in a long-lived excited state. This causes a rapid increase of the magnetoresistance between the spin-polarized tip and Fe trimer and quenches elastic tunneling. By varying the coupling strength between the tip and Fe trimer, we find that in this transport regime the dynamic locking of the Fe trimer competes with magnetic exchange interaction, which statically forces the Fe trimer into its high-magnetoresistance state and removes the NDR.
收录类别	SCI ; EI
语种	英语
资助项目	European Research Council (ERC) under the European Union's Horizon research and innovation program[ERC-2014-StG-633818-dasQ]
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000415906500008
出版者	AMER PHYSICAL SOC
EI入藏号	20174904494600
EI主题词	Atoms ; Chains ; Electron transport properties ; Electron tunneling ; Excited states ; Locks (fasteners) ; Magnetoresistance ; Negative resistance ; Spin dynamics ; Spin polarization ; Tunnelling magnetoresistance
EI分类号	Mechanical Drives:602.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Organic Polymers:815.1.1 ; Atomic and Molecular Physics:931.3 ; High Energy Physics:932.1
WOS关键词	SINGLE ; SPINTRONICS ; TRANSPORT
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/10042
专题	物质科学与技术学院_PI研究组_颜世超组
通讯作者	Rolf-Pissarczyk, Steffen; Yan, Shichao; Loth, Sebastian
作者单位	1.Max Planck Inst Struct & Dynam Matter, Luruper Chaussee 149, D-22761 Hamburg, Germany 2.Max Planck Inst Solid State Res, Heisenbergstr 1, D-70569 Stuttgart, Germany 3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 4.Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada 5.Univ Stuttgart, Inst Funct Matter & Quantum Technol, Pfaffenwaldring 57, D-70569 Stuttgart, Germany
通讯作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Rolf-Pissarczyk, Steffen,Yan, Shichao,Malavolti, Luigi,et al. Dynamical Negative Differential Resistance in Antiferromagnetically Coupled Few-Atom Spin Chains[J]. PHYSICAL REVIEW LETTERS,2017,119(21).
APA	Rolf-Pissarczyk, Steffen,Yan, Shichao,Malavolti, Luigi,Burgess, Jacob A. J.,McMurtrie, Gregory,&Loth, Sebastian.(2017).Dynamical Negative Differential Resistance in Antiferromagnetically Coupled Few-Atom Spin Chains.PHYSICAL REVIEW LETTERS,119(21).
MLA	Rolf-Pissarczyk, Steffen,et al."Dynamical Negative Differential Resistance in Antiferromagnetically Coupled Few-Atom Spin Chains".PHYSICAL REVIEW LETTERS 119.21(2017).