Magnetization and magnetostriction measurements of the dipole-octupole quantum spin ice candidate Ce2Hf2O7
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arXiv
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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
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2025
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| author | Kermarrec, Edwin Chen, Guanyue Okamoto, Hiromu Huang, Chun-Jiong Yan, Han Yan, Jian Takeda, Hikaru Shimizu, Yusei Smith, Evan M. Fitterman, Avner Bianchi, Andrea D. Gaulin, Bruce D. Yamashita, Minoru |
| author_facet | Kermarrec, Edwin Chen, Guanyue Okamoto, Hiromu Huang, Chun-Jiong Yan, Han Yan, Jian Takeda, Hikaru Shimizu, Yusei Smith, Evan M. Fitterman, Avner Bianchi, Andrea D. Gaulin, Bruce D. Yamashita, Minoru |
| contents | We investigate the magnetization and the magnetostriction of the dipole-octupole quantum spin ice candidate Ce2Hf2O7 down to 50 mK. We find that the magnetization curves observed with the magnetic field applied along all the principal axes ([100], [110], and [111]) exhibit a magnetic hysteresis below around 300 mK. In addition, a kink-like feature is observed in the magnetization under B || [111], at which the magnetostriction also shows a convex field dependence. Our classical Monte-Carlo and quantum exact diagonalization calculations demonstrate that these features in the magnetization are well reproduced by the spin Hamiltonian with a dominant interaction between the octupole moments and with a QSI ground state, indicating the emergence of a dipole-octupole QSI in this compound. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_09189 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magnetization and magnetostriction measurements of the dipole-octupole quantum spin ice candidate Ce2Hf2O7 Kermarrec, Edwin Chen, Guanyue Okamoto, Hiromu Huang, Chun-Jiong Yan, Han Yan, Jian Takeda, Hikaru Shimizu, Yusei Smith, Evan M. Fitterman, Avner Bianchi, Andrea D. Gaulin, Bruce D. Yamashita, Minoru Strongly Correlated Electrons We investigate the magnetization and the magnetostriction of the dipole-octupole quantum spin ice candidate Ce2Hf2O7 down to 50 mK. We find that the magnetization curves observed with the magnetic field applied along all the principal axes ([100], [110], and [111]) exhibit a magnetic hysteresis below around 300 mK. In addition, a kink-like feature is observed in the magnetization under B || [111], at which the magnetostriction also shows a convex field dependence. Our classical Monte-Carlo and quantum exact diagonalization calculations demonstrate that these features in the magnetization are well reproduced by the spin Hamiltonian with a dominant interaction between the octupole moments and with a QSI ground state, indicating the emergence of a dipole-octupole QSI in this compound. |
| title | Magnetization and magnetostriction measurements of the dipole-octupole quantum spin ice candidate Ce2Hf2O7 |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2509.09189 |