Published November 2023
| Version v1
Journal article
Observation of topological Z2-vortex fluctuations in the frustrated Heisenberg magnet NaCrO2
Description
Spin fluctuations in the triangular-lattice Heisenberg antiferromagnet NaCrO2 are investigated by means of quasi-elastic neutron scattering with high energy resolution and a wide energy band. Two components with the following features are captured separately. They are pronounced at intermediate temperatures of 20 to 50 K. One, with quite an extended lifetime corresponding to ∼0.001Eex (Eex is the exchange energy), nearly disappears at low temperature (10 K), and the other, with an extended lifetime of ∼0.01Eex, survives there, identified as the free Z2 vortex and Z2-vortex pair, respectively, in agreement with the Z2-vortex theory. (author)
Availability note (English)
Available from https://www.jstage.jst.go.jp/browse/hamon/Additional details
Additional titles
- Original title (Japanese)
- フラストレートハイゼンベルク磁性体NaCrO2におけるトポロジカルなZ2渦揺らぎの中性子散乱による観測
Identifiers
Publishing Information
- Journal Title
- Hamon (Online)
- Journal Volume
- 33
- Journal Issue
- 4
- Series
- 雑誌名:波紋
- Journal Page Range
- p. 138-141
- ISSN
- 1884-636X
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 55044091
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ANISOTROPY; CRITICAL TEMPERATURE; ELECTRON SPIN RESONANCE; FLUCTUATIONS; HEISENBERG MODEL; MAGNETIC SPECIFIC HEAT; MAGNETIZATION; MUON SPIN RELAXATION; NUCLEAR MAGNETIC RESONANCE; QUASI-ELASTIC SCATTERING; SPIN; TEMPERATURE DEPENDENCE
- Descriptors DEC
- ANGULAR MOMENTUM; CRYSTAL MODELS; DIRECT REACTIONS; MAGNETIC RESONANCE; MATHEMATICAL MODELS; NUCLEAR REACTIONS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; QUASI-FREE REACTIONS; RELAXATION; RESONANCE; SCATTERING; SPECIFIC HEAT; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE; VARIATIONS
Optional Information
- Notes
- 27 refs., 4 figs., 1 tab.