Particle-Hole Symmetry Breaking in a Spin-Dimer System TlCuCl3 Observed at 100 T

The entire magnetization process of TlCuCl3 has been experimentally investigated up to 100 T employing the single-turn technique. The upper critical field Hc2 is observed to be 86.1 T at 2 K. A convex slope of the M−H curve between the lower and upper critical fields (Hc1 and Hc2) is clearly observe...

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Bibliographic Details
Published in:Physical review letters 2020-12, Vol.125 (26), p.1
Main Authors: Zhou, X-G, Yao, Yuan, Matsuda, Y H, Ikeda, A, Matsuo, A, Kindo, K, Tanaka, H
Format: Article
Language:English
Subjects:
Broken symmetry
Critical field (superconductivity)
Dimers
Monte Carlo simulation
Particle spin
Symmetry
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Summary:The entire magnetization process of TlCuCl3 has been experimentally investigated up to 100 T employing the single-turn technique. The upper critical field Hc2 is observed to be 86.1 T at 2 K. A convex slope of the M−H curve between the lower and upper critical fields (Hc1 and Hc2) is clearly observed, which indicates that a particle-hole symmetry is broken in TlCuCl3. By quantum Monte Carlo simulation and the bond-operator theory method, we find that the particle-hole symmetry breaking results from strong interdimer interactions.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.125.267207