@article{ISI:000245691400058,
 abstract = {We present magnetization (M) and magnetoresistance (MR) data for a
series of Sr2FeMoO6 samples with independent control on antisite defect
and grain-boundary densities, which reveal several unexpected features,
including a novel switching-like behavior of MR with M. These, in
conjunction with model calculations, establish that the MR in Sr2FeMoO6
is dominantly controlled by a new mechanism, derived from the magnetic
polarization of grain-boundary regions acting like spin valves, leading
to behavior qualitatively different from that usually encountered in
tunneling MR. We show that a simple and useful experimental signature
for the presence of this spin-valve-type MR (SVMR) is a wider hysteresis
in MR compared to that in M.},
 article-number = {157205},
 author = {Sarma, D. D. and Ray, Sugata and Tanaka, K. and Kobayashi, M. and
Fujimori, A. and Sanyal, P. and Krishnamurthy, H. R. and Dasgupta, C.},
 doi = {10.1103/PhysRevLett.98.157205},
 eissn = {1079-7114},
 issn = {0031-9007},
 journal = {PHYSICAL REVIEW LETTERS},
 month = {APR 13},
 number = {15},
 orcid-numbers = {Sarma, D. D./0000-0001-6433-1069
Dasgupta, Chandan/0000-0002-0302-1881},
 researcherid-numbers = {Sanyal, Prabuddha/E-3934-2016
Sarma, D. D./B-2576-2010
},
 times-cited = {98},
 title = {Intergranular magnetoresistance in Sr2FeMoO6 from a magnetic tunnel
barrier mechanism across grain boundaries},
 unique-id = {ISI:000245691400058},
 volume = {98},
 year = {2007}
}