Large magnetostriction and first-order phase transition induced by ultrahigh magnetic fields in V$_6$O$_{13}$
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866908745448030208 |
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| author | Ishii, Yuto Ikeda, Akihiko Matsuda, Yasuhiro. H. |
| author_facet | Ishii, Yuto Ikeda, Akihiko Matsuda, Yasuhiro. H. |
| contents | V$_6$O$_{13}$ exhibits the metal-insulator transition (MIT) at around 150 K with the formation of vanadium-vanadium (V-V) dimers. We measured the magnetostriction of V$_6$O$_{13}$ along the crystallographic $b$-axis in ultrahigh magnetic fields up to 186 T at various temperatures. An abrupt and large negative magnetostriction of $ΔL / L \sim 10^{-3}$ was observed above 120 T below 150 K which is attributed to the collapse of the V-V dimer. A pronounced hysteresis exceeding 50 T was observed, indicating a first-order phase transition. The field-induced collapse of the V-V dimer is expected to be accompanied by the insulator-to-metal transition. The robustness of the insulating phase against magnetic fields was discussed based on thermodynamics and the comparison with the case of VO$_2$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_20633 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Large magnetostriction and first-order phase transition induced by ultrahigh magnetic fields in V$_6$O$_{13}$ Ishii, Yuto Ikeda, Akihiko Matsuda, Yasuhiro. H. Strongly Correlated Electrons V$_6$O$_{13}$ exhibits the metal-insulator transition (MIT) at around 150 K with the formation of vanadium-vanadium (V-V) dimers. We measured the magnetostriction of V$_6$O$_{13}$ along the crystallographic $b$-axis in ultrahigh magnetic fields up to 186 T at various temperatures. An abrupt and large negative magnetostriction of $ΔL / L \sim 10^{-3}$ was observed above 120 T below 150 K which is attributed to the collapse of the V-V dimer. A pronounced hysteresis exceeding 50 T was observed, indicating a first-order phase transition. The field-induced collapse of the V-V dimer is expected to be accompanied by the insulator-to-metal transition. The robustness of the insulating phase against magnetic fields was discussed based on thermodynamics and the comparison with the case of VO$_2$. |
| title | Large magnetostriction and first-order phase transition induced by ultrahigh magnetic fields in V$_6$O$_{13}$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2504.20633 |