English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

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

MPS-Authors
/persons/resource/persons133864

Rolf-Pissarczyk,  S.
Dynamics of Nanoelectronic Systems, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Max Planck Institute for Solid State Research;

/persons/resource/persons133866

Yan,  S.
Dynamics of Nanoelectronic Systems, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Max Planck Institute for Solid State Research;
School of Physical Science and Technology, Shanghai Tech University;

/persons/resource/persons182904

Malavolti,  L.
Dynamics of Nanoelectronic Systems, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Max Planck Institute for Solid State Research;

/persons/resource/persons140803

Burgess,  J. A. J.
Dynamics of Nanoelectronic Systems, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Max Planck Institute for Solid State Research;
Department of Physics and Astronomy, University of Manitoba, Winnipeg;

/persons/resource/persons182906

McMurtrie,  G.
Dynamics of Nanoelectronic Systems, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Max Planck Institute for Solid State Research;

/persons/resource/persons133858

Loth,  S.
Dynamics of Nanoelectronic Systems, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Max Planck Institute for Solid State Research;
University of Stuttgart - Institute for Functional Matter and Quantum Technologies;

Fulltext (public)

PhysRevLett.119.217201.pdf
(Publisher version), 431KB

Supplementary Material (public)

SM.pdf
(Supplementary material), 720KB

Citation

Rolf-Pissarczyk, S., Yan, S., Malavolti, L., Burgess, J. A. J., McMurtrie, G., & Loth, S. (2017). Dynamical Negative Differential Resistance in Antiferromagnetically Coupled Few-Atom Spin Chains. Physical Review Letters, 119(21): 217201. doi:10.1103/PhysRevLett.119.217201.


Cite as: http://hdl.handle.net/21.11116/0000-0001-98BB-1
Abstract
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.