Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3688043
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Funding
- NSF DMR [0504158, 0907007]
- ONR [N00014-09-1-0177]
- Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-SC0006418]
- Packard Fellowship
- MIT-Lincoln Laboratories
- MRSEC of the National Science Foundation [DMR-0819762]
- U.S. Department of Energy (DOE) [DE-SC0006418] Funding Source: U.S. Department of Energy (DOE)
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0504158] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0907007, 819762] Funding Source: National Science Foundation
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We report on the observation of ferromagnetism in epitaxial thin films of the topological insulator compound Bi2Se3 with chromium doping. The structural, magnetic, and magnetoelectrical properties of Bi2Se3 were investigated for Cr concentrations up to 10%. For a Cr content up to similar to 5% the films are of good crystalline quality, with the lattice parameter a decreasing and the lattice parameter c increasing with increasing Cr concentration. The Curie temperature reached a maximum T-C=20K for 5.2% Cr. Well-defined ferromagnetic hysteresis in the magnetization and in the magnetoresistance was also observed in these films. (C) 2012 American Institute of Physics. [doi:10.1063/1.3688043]
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