title: Probing the interplay between quantum charge fluctuations and magnetic ordering in LuFe2O4.
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.
authors.affiliation: Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM 87545.
authors.forename: J
authors.initials: J
authors.lastname: Lee
authors.forename: S A
authors.initials: SA
authors.lastname: Trugman
authors.forename: C D
authors.initials: CD
authors.lastname: Batista
authors.forename: C L
authors.initials: CL
authors.lastname: Zhang
authors.forename: D
authors.initials: D
authors.lastname: Talbayev
authors.forename: X S
authors.initials: XS
authors.lastname: Xu
authors.forename: S-W
authors.initials: SW
authors.lastname: Cheong
authors.forename: D A
authors.initials: DA
authors.lastname: Yarotski
authors.forename: A J
authors.initials: AJ
authors.lastname: Taylor
authors.forename: R P
authors.initials: RP
authors.lastname: Prasankumar
references.citation: Phys Rev Lett. 2012 Jul 6;109(1):016405
references.pmid: 23031121
references.citation: Phys Rev Lett. 2007 Jun 15;98(24):246403
references.pmid: 17677978
references.citation: Nature. 2010 Dec 9;468(7325):799-802
references.pmid: 21107321
references.citation: Phys Rev Lett. 2009 Nov 13;103(20):207202
references.pmid: 20366006
references.citation: Phys Rev Lett. 2011 Jul 15;107(3):036403
references.pmid: 21838383
references.citation: Phys Rev B Condens Matter. 1993 Jun 1;47(21):14495-14502
references.pmid: 10005802
references.citation: Phys Rev Lett. 2008 Nov 28;101(22):227601
references.pmid: 19113522
references.citation: Phys Rev Lett. 2012 Jan 20;108(3):037206
references.pmid: 22400782
references.citation: Phys Rev Lett. 2008 Aug 29;101(9):097603
references.pmid: 18851660
references.citation: Phys Rev Lett. 2008 Nov 28;101(22):227602
references.pmid: 19113523
references.citation: Phys Rev Lett. 2005 Dec 31;95(26):267404
references.pmid: 16486404
references.citation: Nat Mater. 2007 Jan;6(1):13-20
references.pmid: 17199121
references.citation: Nature. 2006 Aug 17;442(7104):759-65
references.pmid: 16915279
references.citation: Nature. 2005 Aug 25;436(7054):1136-8
references.pmid: 16121175