Quantum spin state stabilized by coupling with classical spins
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arXiv
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| Auteurs principaux: | , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866929308677701632 |
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| author | Yamaguchi, Hironori Okubo, Tsuyoshi Matsuo, Akira Kawakami, Takashi Iwasaki, Yoshiki Takahashi, Taiki Hosokoshi, Yuko Kindo, Koichi |
| author_facet | Yamaguchi, Hironori Okubo, Tsuyoshi Matsuo, Akira Kawakami, Takashi Iwasaki, Yoshiki Takahashi, Taiki Hosokoshi, Yuko Kindo, Koichi |
| contents | We introduce a model compound featuring a spin-1/2 frustrated square lattice partially coupled by spin-5/2. A significant magnetization plateau exceeding 60 T could be observed, indicating a quantum state formed by $S$ = 1/2 spins in the square lattice. The remaining $S$ = 5/2 spins exhibited paramagnetic behavior in the low-field regions. The numerical analysis confirmed that the observed quantum state is a many-body entangled state based on the dominant AF interactions and is strongly stabilized by coupling with spin-5/2. The stabilization of this quantum state can be attributed to a compensation effect similar to magnetic field-induced superconductivity, which serves as a strategy to control the stability of quantum spin states in magnetic fields. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_06767 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum spin state stabilized by coupling with classical spins Yamaguchi, Hironori Okubo, Tsuyoshi Matsuo, Akira Kawakami, Takashi Iwasaki, Yoshiki Takahashi, Taiki Hosokoshi, Yuko Kindo, Koichi Strongly Correlated Electrons We introduce a model compound featuring a spin-1/2 frustrated square lattice partially coupled by spin-5/2. A significant magnetization plateau exceeding 60 T could be observed, indicating a quantum state formed by $S$ = 1/2 spins in the square lattice. The remaining $S$ = 5/2 spins exhibited paramagnetic behavior in the low-field regions. The numerical analysis confirmed that the observed quantum state is a many-body entangled state based on the dominant AF interactions and is strongly stabilized by coupling with spin-5/2. The stabilization of this quantum state can be attributed to a compensation effect similar to magnetic field-induced superconductivity, which serves as a strategy to control the stability of quantum spin states in magnetic fields. |
| title | Quantum spin state stabilized by coupling with classical spins |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2404.06767 |