Spontaneous decays of magneto-elastic excitations in non-collinear antiferromagnet (Y,Lu)MnO3

Joosung Oh, Manh Duc Le, Ho-Hyun Nahm, Hasung Sim, Jaehong Jeong, T. G. Perring, Hyungje Woo, Kenji Nakajima, Seiko Ohira-Kawamura, Zahra Yamani, Y. Yoshida, H. Eisaki, S. -W. Cheong, A. L. Chernyshev and Je-Geun Park ()
Additional contact information
Joosung Oh: Center for Correlated Electron Systems, Institute for Basic Science
Manh Duc Le: Center for Correlated Electron Systems, Institute for Basic Science
Ho-Hyun Nahm: Center for Correlated Electron Systems, Institute for Basic Science
Hasung Sim: Center for Correlated Electron Systems, Institute for Basic Science
Jaehong Jeong: Center for Correlated Electron Systems, Institute for Basic Science
T. G. Perring: ISIS Facility, STFC Rutherford Appleton Laboratory
Hyungje Woo: ISIS Facility, STFC Rutherford Appleton Laboratory
Kenji Nakajima: J-PARC Center, Japan Atomic Energy Agency
Seiko Ohira-Kawamura: J-PARC Center, Japan Atomic Energy Agency
Zahra Yamani: Chalk River Laboratories, National Research Council
Y. Yoshida: National Institute of Advanced Industrial Science and Technology
H. Eisaki: National Institute of Advanced Industrial Science and Technology
S. -W. Cheong: and Rutgers Center for Emergent Materials, Rutgers University
A. L. Chernyshev: University of California
Je-Geun Park: Center for Correlated Electron Systems, Institute for Basic Science

Nature Communications, 2016, vol. 7, issue 1, 1-6

Abstract: Abstract Magnons and phonons are fundamental quasiparticles in a solid and can be coupled together to form a hybrid quasi-particle. However, detailed experimental studies on the underlying Hamiltonian of this particle are rare for actual materials. Moreover, the anharmonicity of such magnetoelastic excitations remains largely unexplored, although it is essential for a proper understanding of their diverse thermodynamic behaviour and intrinsic zero-temperature decay. Here we show that in non-collinear antiferromagnets, a strong magnon–phonon coupling can significantly enhance the anharmonicity, resulting in the creation of magnetoelastic excitations and their spontaneous decay. By measuring the spin waves over the full Brillouin zone and carrying out anharmonic spin wave calculations using a Hamiltonian with an explicit magnon–phonon coupling, we have identified a hybrid magnetoelastic mode in (Y,Lu)MnO3 and quantified its decay rate and the exchange-striction coupling term required to produce it.

Date: 2016
References: Add references at CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
https://www.nature.com/articles/ncomms13146 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13146

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms13146

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().