Field-induced anomaly in the anisotropic non-Fermi-liquid normal state of UBe$_{13}$
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866918262701293568 |
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| author | Shimizu, Yusei Kittaka, Shunichiro Kono, Yohei Nakamura, Shota Haga, Yoshinori Yamamoto, Etsuji Machida, Kazushige Amitsuka, Hiroshi Sakakibara, Toshiro |
| author_facet | Shimizu, Yusei Kittaka, Shunichiro Kono, Yohei Nakamura, Shota Haga, Yoshinori Yamamoto, Etsuji Machida, Kazushige Amitsuka, Hiroshi Sakakibara, Toshiro |
| contents | We report the results of high-resolution dc magnetization and specific-heat measurements at very low temperatures for
a single crystal \color{black} of UBe$_{13}$ in magnetic fields applied along the [001] and [111] directions, in both the normal and superconducting states. In the normal state, magnetic susceptibility $χ(T) = M/H$ exhibits a logarithmic temperature dependence over a wide temperature range (1-20 K). However, with increasing field, this non-Fermi-liquid (NFL) behavior of $χ(T) $ at low temperatures is suppressed. Moreover, a susceptibility maximum occurs below 4 T, whereas Fermi-liquid coherence is recovered above 8 T. In addition, thermodynamic anomalies ($T_{\rm A}$ and $H_{\rm A}$) occur in both magnetic susceptibility and specific heat at intermediate fields (6--10 T) along the [111] direction. Furthermore, a nontrivial fifth-order nonlinear susceptibility is observed in the normal-state magnetization of UBe$_{13}$. These results suggest a close relationship between the field-induced multipolar correlations of $5f$-electron degrees of freedom and the Fermi-surface reconstruction accompanying the crossover from the NFL state to the Fermi-liquid state in UBe$_{13}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_19100 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Field-induced anomaly in the anisotropic non-Fermi-liquid normal state of UBe$_{13}$ Shimizu, Yusei Kittaka, Shunichiro Kono, Yohei Nakamura, Shota Haga, Yoshinori Yamamoto, Etsuji Machida, Kazushige Amitsuka, Hiroshi Sakakibara, Toshiro Strongly Correlated Electrons We report the results of high-resolution dc magnetization and specific-heat measurements at very low temperatures for a single crystal \color{black} of UBe$_{13}$ in magnetic fields applied along the [001] and [111] directions, in both the normal and superconducting states. In the normal state, magnetic susceptibility $χ(T) = M/H$ exhibits a logarithmic temperature dependence over a wide temperature range (1-20 K). However, with increasing field, this non-Fermi-liquid (NFL) behavior of $χ(T) $ at low temperatures is suppressed. Moreover, a susceptibility maximum occurs below 4 T, whereas Fermi-liquid coherence is recovered above 8 T. In addition, thermodynamic anomalies ($T_{\rm A}$ and $H_{\rm A}$) occur in both magnetic susceptibility and specific heat at intermediate fields (6--10 T) along the [111] direction. Furthermore, a nontrivial fifth-order nonlinear susceptibility is observed in the normal-state magnetization of UBe$_{13}$. These results suggest a close relationship between the field-induced multipolar correlations of $5f$-electron degrees of freedom and the Fermi-surface reconstruction accompanying the crossover from the NFL state to the Fermi-liquid state in UBe$_{13}$. |
| title | Field-induced anomaly in the anisotropic non-Fermi-liquid normal state of UBe$_{13}$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2512.19100 |