Magnetic excitations affected by spin-lattice coupling in the S=3/2 triangular lattice antiferromagnet Ag<sub>2</sub>CrO<sub>2</sub> [electronic resource]
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Full Text (via OSTI) |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2020.
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| Abstract: | Ag<sub>2</sub>CrO<sub>2</sub> 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 (T<sub>N</sub>) 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 T<sub>N</sub>, diffuse scattering originating from the short-ranged magnetic correlations consistent with a 120ʻ structure was observed. Here, the magnetic excitations below T<sub>N</sub> 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. |
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| Item Description: | Published through Scitech Connect. 12/09/2020. "Journal ID: ISSN 2469-9950." ": US2205216." Matsuda, Masaaki ; Dissanayake, Sachith E. ; Yoshida, Hiroyuki K. ; Isobe, Masaaki ; Stone, Matthew B. ; |
| Physical Description: | Size: Article No. 214411 : digital, PDF file. |