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Bayrakci SP, Tennant DA, Leininger P, et al. Lifetimes of antiferromagnetic magnons in two and three dimensions: experiment, theory, and numerics. Phys Rev Lett. 2013;111(1):017204doi: 10.1103/PhysRevLett.111.017204.
Bayrakci, S. P., Tennant, D. A., Leininger, P., Keller, T., Gibson, M. C., Wilson, S. D., Birgeneau, R. J., & Keimer, B. (2013). Lifetimes of antiferromagnetic magnons in two and three dimensions: experiment, theory, and numerics. Physical review letters, 111(1), 017204. https://doi.org/10.1103/PhysRevLett.111.017204
Bayrakci, S P, et al. "Lifetimes of antiferromagnetic magnons in two and three dimensions: experiment, theory, and numerics." Physical review letters vol. 111,1 (2013): 017204. doi: https://doi.org/10.1103/PhysRevLett.111.017204
Bayrakci SP, Tennant DA, Leininger P, Keller T, Gibson MC, Wilson SD, Birgeneau RJ, Keimer B. Lifetimes of antiferromagnetic magnons in two and three dimensions: experiment, theory, and numerics. Phys Rev Lett. 2013 Jul 05;111(1):017204. doi: 10.1103/PhysRevLett.111.017204. Epub 2013 Jul 03. PMID: 23863025.
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Phys Rev Lett. 2013 Jul 05;111(1):017204. doi: 10.1103/PhysRevLett.111.017204. Epub 2013 Jul 03.

Lifetimes of antiferromagnetic magnons in two and three dimensions: experiment, theory, and numerics.

Physical review letters

S P Bayrakci, D A Tennant, Ph Leininger, T Keller, M C R Gibson, S D Wilson, R J Birgeneau, B Keimer

Affiliations

  1. Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany. [email protected]

PMID: 23863025 DOI: 10.1103/PhysRevLett.111.017204

Abstract

A high-resolution neutron spectroscopic technique is used to measure momentum-resolved magnon lifetimes in the prototypical two- and three-dimensional antiferromagnets Rb(2)MnF(4) and MnF(2), over the full Brillouin zone and a wide range of temperatures. We rederived theories of the lifetime resulting from magnon-magnon scattering, thereby broadening their applicability beyond asymptotically small regions of wave vector and temperature. Corresponding computations, combined with a small contribution reflecting collisions with domain boundaries, yield excellent quantitative agreement with the data. Comprehensive understanding of magnon lifetimes in simple antiferromagnets provides a solid foundation for current research on more complex magnets.

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