Document Detail


Current-driven spin dynamics of artificially constructed quantum magnets.
MedLine Citation:
PMID:  23288534     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The future of nanoscale spin-based technologies hinges on a fundamental understanding and dynamic control of atomic-scale magnets. The role of the substrate conduction electrons on the dynamics of supported atomic magnets is still a question of interest lacking experimental insight. We characterized the temperature-dependent dynamical response of artificially constructed magnets, composed of a few exchange-coupled atomic spins adsorbed on a metallic substrate, to spin-polarized currents driven and read out by a magnetic scanning tunneling microscope tip. The dynamics, reflected by two-state spin noise, is quantified by a model that considers the interplay between quantum tunneling and sequential spin transitions driven by electron spin-flip processes and accounts for an observed spin-transfer torque effect.
Authors:
Alexander Ako Khajetoorians; Benjamin Baxevanis; Christoph Hübner; Tobias Schlenk; Stefan Krause; Tim Oliver Wehling; Samir Lounis; Alexander Lichtenstein; Daniela Pfannkuche; Jens Wiebe; Roland Wiesendanger
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  339     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-01-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  55-9     Citation Subset:  IM    
Affiliation:
Institute of Applied Physics, Hamburg University, Hamburg, Germany. akhajeto@physnet.uni-hamburg.de
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