Speaker
Peng Chen
(Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA)
Description
P. Chen,1 N. Lee,2 S. McGill,3 S. -W. Cheong,2 and J. L. Musfeldt1
1 Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA
2 Rutgers Center for Emergent Materials and Department of Physics & Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
3 National High Magnetic Field Laboratory, Tallahassee, Florida 32310, USA
We investigated the magneto-optical properties of α-Fe2O3 in order to understand the interplay between charge and magnetism in a model transition metal oxide. We discovered that hematite appears more red in applied magnetic field than in zero field conditions, an effect that is amplified by the presence of the spin flop transition. Analysis of the exciton pattern on the edge of the d-d color band reveals C2/c monoclinic symmetry in the high field phase. These findings advance our understanding of magnetoelectric coupling away from the static limit and motivate spectroscopic work on other iron-based materials under extreme conditions.
Primary author
Peng Chen
(Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA)
