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Ultrafast magnetization dynamics of spintronic nanostructures.
MedLine Citation:
PMID:  21727117     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The ultrafast (sub-nanosecond) magnetization dynamics of ferromagnetic thin films and elements that find application in spintronic devices is reviewed. The major advances in the understanding of magnetization dynamics in the two decades since the discovery of giant magnetoresistance and the prediction of spin-transfer torque are discussed, along with the plethora of new experimental techniques developed to make measurements on shorter length and time scales. Particular consideration is given to time-resolved measurements of the magneto-optical Kerr effect, and it is shown how a succession of studies performed with this technique has led to an improved understanding of the dynamics of nanoscale magnets. The dynamics can be surprisingly rich and complicated, with the latest studies of individual nanoscale elements showing that the dependence of the resonant mode spectrum upon the physical structure is still not well understood. Finally, the article surveys the prospects for development of high-frequency spintronic devices and highlights areas in which further study of fundamental properties will be required within the coming decade.
Authors:
P S Keatley; V V Kruglyak; P Gangmei; R J Hicken
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Philosophical transactions. Series A, Mathematical, physical, and engineering sciences     Volume:  369     ISSN:  1364-503X     ISO Abbreviation:  Philos Trans A Math Phys Eng Sci     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-07-05     Completed Date:  2011-08-19     Revised Date:  2013-04-24    
Medline Journal Info:
Nlm Unique ID:  101133385     Medline TA:  Philos Trans A Math Phys Eng Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  3115-35     Citation Subset:  -    
Affiliation:
School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, UK. p.s.keatley@exeter.ac.uk
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