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arXiv · 2009.11028

Particle-hole symmetry breaking in a spin-dimer system TlCuCl$_3$ observed at 100 T

X. -G. Zhou·Yuan Yao·Y. H. Matsuda·A. Ikeda·A. Matsuo·K. Kindo·H. Tanaka
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Abstract

The entire magnetization process of TlCuCl$_3$ has been experimentally investigated up to 100 T employing the single-turn technique. The upper critical field $H_{c2}$ 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 ($H_{c1}$ and $H_{c2}$) is clearly observed, which indicates that a particle-hole symmetry is broken in TlCuCl$_3$. By quantum Monte Carlo simulation and the bond-operator theory method, we find that the particle-hole symmetry breaking results from strong inter-dimer interactions.

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X. -G. Zhou, Yuan Yao, Y. H. Matsuda, A. Ikeda, A. Matsuo, K. Kindo, H. Tanaka. 2020-09-23. Particle-hole symmetry breaking in a spin-dimer system TlCuCl$_3$ observed at 100 T. https://doi.org/10.1103/physrevlett.125.267207

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