Document Detail

Electrolyte Gate-Controlled Kondo Effect in SrTiO_{3}.
MedLine Citation:
PMID:  22243097     Owner:  NLM     Status:  In-Data-Review    
We report low-temperature, high-field magnetotransport measurements of SrTiO_{3} gated by an ionic gel electrolyte. A saturating resistance upturn and negative magnetoresistance that signal the emergence of the Kondo effect appear for higher applied gate voltages. This observation, enabled by the wide tunability of the ionic gel-applied electric field, promotes the interpretation of the electric field-effect-induced 2D electron system in SrTiO_{3} as an admixture of magnetic Ti^{3+} ions, i.e., localized and unpaired electrons, and delocalized electrons that partially fill the Ti 3d conduction band.
Menyoung Lee; J R Williams; Sipei Zhang; C Daniel Frisbie; D Goldhaber-Gordon
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Publication Detail:
Type:  Journal Article     Date:  2011-12-12
Journal Detail:
Title:  Physical review letters     Volume:  107     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2012-01-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  256601     Citation Subset:  IM    
Department of Physics, Stanford University, Stanford, California 94305, USA.
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