Small-polaron hopping conduction in bilayer manganite La1.2Sr1.8Mn2O7

Download
  1. Get@NRC: Small-polaron hopping conduction in bilayer manganite La1.2Sr1.8Mn2O7 (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1103/PhysRevB.67.094426
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titlePhysical review. B, Condensed matter and materials physics
Volume67
Issue9
Pages094426–; # of pages: 4
AbstractWe report anisotropic resistivity measurements on a La1.2Sr1.8Mn2O7 single crystal over a temperature T range from 2 to 400 K and in magnetic-fields H up to 14 T. For T>~218 K, the temperature dependence of the zero-field in-plane resistivity ?ab(T) obeys the adiabatic small polaron hopping mechanism, while the out-of-plane resistivity ?c(T) can be ascribed by an Arrhenius law with the same activation energy. Considering the magnetic character of the polarons and the close correlation between resistivity and magnetization, we developed a model which allows the determination of ?ab,c(H,T). The excellent agreement of the calculations with the measurements indicates that small polarons play an essential role in the electrical transport properties in the paramagnetic phase of bilayer manganites.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
NPARC number12330164
Export citationExport as RIS
Report a correctionReport a correction
Record identifier14a2d623-5df6-4311-b87c-29b1b55ef097
Record created2009-09-10
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)