Journal article
Magnetic-polaron-driven magnetoresistance in the pyrochlore Lu2V2O7
Abstract
The structural, magnetic, and transport properties of single-crystalline Lu2V2O7 are studied. Lu2V2O7 shows a ferromagnetic transition at TC=69.5K and a negative magnetoresistance (MR) as high as 50% at T2=75K with an applied field of 5T. Through various experiments, it is demonstrated that the mechanism for MR is not through double exchange, but through a polaron-mediated behavior similar to Tl2Mn2O7. This places Lu2V2O7 as the only other …
Authors
Zhou HD; Choi ES; Souza JA; Lu J; Xin Y; Lumata LL; Conner BS; Balicas L; Brooks JS; Neumeier JJ
Journal
Physical Review B, Vol. 77, No. 2,
Publisher
American Physical Society (APS)
Publication Date
January 1, 2008
DOI
10.1103/physrevb.77.020411
ISSN
2469-9950