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. 2010 Aug 13;105(7):076402.
doi: 10.1103/PhysRevLett.105.076402. Epub 2010 Aug 13.

Spin polarons in the correlated metallic pyrochlore Cd2Re2O7

Vyacheslav G Storchak  1 , Jess H Brewer, Scott L Stubbs, Oleg E Parfenov, Roger L Lichti, Patrick W Mengyan, Jian He, Isaac Bredeson, Dale Hitchcock, David Mandrus
Affiliations

Spin polarons in the correlated metallic pyrochlore Cd2Re2O7

Vyacheslav G Storchak et al. Phys Rev Lett. .

Abstract

Muon spin rotation spectroscopy reveals localized electron states in the geometrically frustrated metallic pyrochlore Cd2Re2O7 at temperatures from 2 to 300 K in transverse magnetic fields up to 7 T. Two distinctive types of localized states, with characteristic radii of about 0.5 and 0.15 nm, are detected at high and low temperature, respectively. These states may be spin polarons, formed due to strong exchange interaction between itinerant electrons and the magnetic 5d electrons of Re ions, which may determine the peculiar electronic and magnetic properties of Cd2Re2O7.

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