Kwon, Sungmin; Jeong, M.; Kubus, Mariusz; Wehinger, B.; Krämer, Karl; Rüegg, Ch.; Rønnow, H. M.; Lee, Soonchil (2019). Field-induced anisotropy in the quasi-two-dimensional weakly anisotropic antiferromagnet [ CuCl ( pyz ) 2 ] BF 4. Physical review. B - condensed matter and materials physics, 99(21) American Physical Society 10.1103/PhysRevB.99.214403
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We measured NMR and magnetic susceptibility for the quasi-two-dimensional, weakly XY-like, spin-1/2 square-lattice Heisenberg antiferromagnet [CuCl(pyz)2]BF4 (pyz = pyrazine =N2C4H4) near the critical temperature. The Néel temperature TN and the order-parameter critical exponent β were obtained from the NMR line broadening as a function of temperature. As the applied field strength (H∥c) was increased, TN increased and β decreased. This behavior indicates that the field effectively enhanced XY anisotropy. The susceptibility as a function of temperature did not show a clear feature for TN, but showed field-dependent minima below TN for both H∥c and H∥ab, where minimum features disappeared for μ0H>2T.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Kubus, Mariusz, Krämer, Karl |
Subjects: |
500 Science > 530 Physics 500 Science > 540 Chemistry |
ISSN: |
1098-0121 |
Publisher: |
American Physical Society |
Funders: |
[42] Schweizerischer Nationalfonds |
Language: |
English |
Submitter: |
Karl Krämer |
Date Deposited: |
02 Sep 2019 09:35 |
Last Modified: |
05 Dec 2022 15:30 |
Publisher DOI: |
10.1103/PhysRevB.99.214403 |
BORIS DOI: |
10.7892/boris.132839 |
URI: |
https://boris.unibe.ch/id/eprint/132839 |
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