Probing the Interplay between Quantum Charge Fluctuations and Magnetic Ordering in LuFe2O4

Authors

J. Lee, Los Alamos National LaboratoryFollow
S. A. Turgman, Los Alamos National Laboratory
C. D. Batista, Los Alamos National Laboratory
C. L. Zhang, Rutgers University
D. Talbayev, Tulane University
X. S. Xu, University of Nebraska-LincolnFollow
S. -W. Cheong, Rutgers University
D. A. Yarotski, Los Alamos National Laboratory
A. J. Taylor, Los Alamos National Laboratory
R. P. Prasankumar, Los Alamos National LaboratoryFollow

Date of this Version

2013

Document Type

Article

Citation

SCIENTIFIC REPORTS | 3 : 2654

Comments

Used by permission.

Abstract

The mechanisms producing strong coupling between electric and magnetic order in multiferroics are not always well understood, since their microscopic origins can be quite different. Hence, gaining a deeper understanding of magnetoelectric coupling in these materials is the key to their rational design. Here, we use ultrafast optical spectroscopy to show that the influence of magnetic ordering on quantum charge fluctuations via the double-exchange mechanism can govern the interplay between electric polarization and magnetism in the charge-ordered multiferroic LuFe₂O₄.