2018年7月23日
Easy-plane XY spin fluctuations in the cycloidal magnet UPtGe studied via field-orientation-dependent Pt 195 NMR
Physical Review B
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- 巻
- 98
- 号
- 1
- DOI
- 10.1103/PhysRevB.98.014425
© 2018 American Physical Society. Pt195 NMR measurements have been performed on a single crystal of the uranium-based compound UPtGe, which is the only 5f system known to possess an incommensurate helical (cycloidal) structure below TN=50 K. Knight shift measurement confirmed the isotropic character of the static spin susceptibilities in hexagonal-like ac crystal planes of the EuAuGe-type crystal structure. The hyperfine coupling constants were also found to be isotropic in the planes, estimated to be 59 kOe/μB. Nuclear relaxation rate (1/T1) measurement revealed the development of the antiferromagnetic spin fluctuations with XY character confined to the hexagonal-like plane below 200 K. The results present a clear contrast to the Ising anisotropy of the fluctuations in ferromagnetic superconductors UCoGe and URhGe.
- リンク情報
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- DOI
- https://doi.org/10.1103/PhysRevB.98.014425
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000439410500005&DestApp=WOS_CPL
- URL
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85051445365&origin=inward
- ID情報
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- DOI : 10.1103/PhysRevB.98.014425
- ISSN : 2469-9950
- SCOPUS ID : 85051445365
- Web of Science ID : WOS:000439410500005