期刊
PHYSICAL REVIEW B
卷 96, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.96.094427
关键词
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资金
- U.S. Department of Energy, Office of Basic Energy Sciences, Materials Science Division [DE-FG02-01ER45885]
- National Science Foundation [DMR-1157490, DMR-1229217]
- Department of Energy [DE-FG02-09ER46554]
- NSF-NRI as part of NSF MRSEC [DMR-0213985]
- Julich Supercomputer Center [JIFF41]
- NIH/NIGMS-IMSD [R25GM086761]
- ERDC DSRC [AFSNW32473012]
We bring together magnetic circular dichroism, photoconductivity, and complementary first-principles calculations in order to unravel spin-charge interactions in the high Curie temperature magnet NiFe2O4. Analysis uncovers a massive set of well-isolated spin-down states, a metamagnetic transition involving spin on the Ni center that switches the electronic structure of this system, and photoconductivity that depends on the magnetic field. These findings open the door for the creation and control of spin-polarized excitations from minority channel charge transfer in spinel ferrites.
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