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Title: 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:
ORCiD logo [1];  [2];  [3]; ORCiD logo [4]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Duke Univ., Durham, NC (United States)
  3. Hokkaido Univ., Sapporo (Japan)
  4. 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. https://doi.org/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.
@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 = {2020},
month = {12}
}

Journal Article:
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