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arXiv · 1408.5229

T/B Scaling in beta-YbAlB4

Shinji Watanabe·Kazumasa Miyake
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Abstract

The scaling behavior over four decades of the ratio of temperature T to magnetic field B observed in the magnetization in beta-YbAlB4 is theoretically examined. By developing a theoretical framework that exhibits the quantum critical phenomena of Yb-valence fluctuations under a magnetic field, we show that the T/B-scaling behavior can appear near the quantum critical point of the valence transition. The emergence of the T/B scaling indicates the presence of the small characteristic energy scale of critical Yb-valence fluctuations. It is argued that the quantum valence criticality offers a unified explanation for the unconventional quantum criticality as well as the T/B scaling in beta-YbAlB4.

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Shinji Watanabe, Kazumasa Miyake. 2014-08-22. T/B Scaling in beta-YbAlB4. https://doi.org/10.7566/jpsj.83.103708

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