Experimental benchmark of the quantum-classical crossover in a spin ladder
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866917144618336256 |
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| author | Yamaguchi, Hironori Shimamura, Itsuki Matsuo, Akira Kindo, Koichi Araki, Koji Iwasaki, Yoshiki Hagiwara, Masayuki |
| author_facet | Yamaguchi, Hironori Shimamura, Itsuki Matsuo, Akira Kindo, Koichi Araki, Koji Iwasaki, Yoshiki Hagiwara, Masayuki |
| contents | We report a spin-(1/2, 5/2) three-leg ladder realized in a radical-Mn polymer, exhibiting an antiferromagnetic transition and magnetization curves accurately described by classical mean-field theory. Although the underlying spin model intrinsically supports strong quantum fluctuations, as confirmed by quantum Monte Carlo simulations, the real system shows an anomalously complete suppression of quantum behavior. These findings provide a key experimental benchmark for the quantum-classical crossover and suggest that lattice topology can play a crucial role in tuning the balance between quantum and classical physics in strongly correlated systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_12234 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Experimental benchmark of the quantum-classical crossover in a spin ladder Yamaguchi, Hironori Shimamura, Itsuki Matsuo, Akira Kindo, Koichi Araki, Koji Iwasaki, Yoshiki Hagiwara, Masayuki Strongly Correlated Electrons Materials Science Quantum Physics We report a spin-(1/2, 5/2) three-leg ladder realized in a radical-Mn polymer, exhibiting an antiferromagnetic transition and magnetization curves accurately described by classical mean-field theory. Although the underlying spin model intrinsically supports strong quantum fluctuations, as confirmed by quantum Monte Carlo simulations, the real system shows an anomalously complete suppression of quantum behavior. These findings provide a key experimental benchmark for the quantum-classical crossover and suggest that lattice topology can play a crucial role in tuning the balance between quantum and classical physics in strongly correlated systems. |
| title | Experimental benchmark of the quantum-classical crossover in a spin ladder |
| topic | Strongly Correlated Electrons Materials Science Quantum Physics |
| url | https://arxiv.org/abs/2512.12234 |