Magnetic excitations affected by spin-lattice coupling in the S=3/2 triangular lattice antiferromagnet Ag2CrO2
Abstract
Ag2CrO2 is an S=3/2 triangular lattice antiferromagnet in which long-range magnetic order with a fivefold magnetic unit cell appears below the transition temperature (TN) of 24 K. The long-range magnetic order is accompanied by a structural transition. Inelastic neutron scattering experiments were performed to investigate the magnetic interactions, anisotropy, and correlations in this material. Above TN, diffuse scattering originating from the short-ranged magnetic correlations consistent with a 120° structure was observed. Here, the magnetic excitations below TN were reproduced reasonably well using a linear spin-wave model with further-neighbor interactions and easy-axis anisotropy, which are predicted to be due to a previously proposed spin-lattice coupling.
- Authors:
-
[1];
[4];
[1]
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Duke Univ., Durham, NC (United States)
- Hokkaido Univ., Sapporo (Japan)
- National Inst. for Materials Science (NIMS), Tsukuba (Japan)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1735451
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 102; Journal Issue: 21; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Matsuda, Masaaki, Dissanayake, Sachith E., Yoshida, Hiroyuki K., Isobe, Masaaki, and Stone, Matthew B. Magnetic excitations affected by spin-lattice coupling in the S=3/2 triangular lattice antiferromagnet Ag2CrO2. United States: N. p., 2020.
Web. doi:10.1103/physrevb.102.214411.
Matsuda, Masaaki, Dissanayake, Sachith E., Yoshida, Hiroyuki K., Isobe, Masaaki, & Stone, Matthew B. Magnetic excitations affected by spin-lattice coupling in the S=3/2 triangular lattice antiferromagnet Ag2CrO2. United States. https://doi.org/10.1103/physrevb.102.214411
Matsuda, Masaaki, Dissanayake, Sachith E., Yoshida, Hiroyuki K., Isobe, Masaaki, and Stone, Matthew B. Wed .
"Magnetic excitations affected by spin-lattice coupling in the S=3/2 triangular lattice antiferromagnet Ag2CrO2". United States. https://doi.org/10.1103/physrevb.102.214411. https://www.osti.gov/servlets/purl/1735451.
@article{osti_1735451,
title = {Magnetic excitations affected by spin-lattice coupling in the S=3/2 triangular lattice antiferromagnet Ag2CrO2},
author = {Matsuda, Masaaki and Dissanayake, Sachith E. and Yoshida, Hiroyuki K. and Isobe, Masaaki and Stone, Matthew B.},
abstractNote = {Ag2CrO2 is an S=3/2 triangular lattice antiferromagnet in which long-range magnetic order with a fivefold magnetic unit cell appears below the transition temperature (TN) of 24 K. The long-range magnetic order is accompanied by a structural transition. Inelastic neutron scattering experiments were performed to investigate the magnetic interactions, anisotropy, and correlations in this material. Above TN, diffuse scattering originating from the short-ranged magnetic correlations consistent with a 120° structure was observed. Here, the magnetic excitations below TN were reproduced reasonably well using a linear spin-wave model with further-neighbor interactions and easy-axis anisotropy, which are predicted to be due to a previously proposed spin-lattice coupling.},
doi = {10.1103/physrevb.102.214411},
journal = {Physical Review B},
number = 21,
volume = 102,
place = {United States},
year = {Wed Dec 09 00:00:00 EST 2020},
month = {Wed Dec 09 00:00:00 EST 2020}
}
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