Zero-point entropies of spin-jam and spin-glass states in a frustrated magnet
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arXiv
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| Format: | Preprint |
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2023
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| author | Piyakulworawat, Chairote Thennakoon, Asiri Yang, Junjie Yoshizawa, Hideki Ueta, Daichi Sato, Taku J Sheng, Kuan Chen, Wei-Tin Pai, Woei-Wu Matan, Kittiwit Lee, Seung-Hun |
| author_facet | Piyakulworawat, Chairote Thennakoon, Asiri Yang, Junjie Yoshizawa, Hideki Ueta, Daichi Sato, Taku J Sheng, Kuan Chen, Wei-Tin Pai, Woei-Wu Matan, Kittiwit Lee, Seung-Hun |
| contents | Thermodynamics studies of a prototypical quasi-two-dimensional frustrated magnet Ba$_2$Sn$_2$ZnCr$_{7p}$Ga$_{10-7p}$O$_{22}$ where the magnetic Cr$^{3+}$ ions are arranged in a triangular network of bipyramids show that the magnetic zero-point entropy for $p=0.98$ is 55(1)\% of the entropy expected when the Cr$^{3+}$ moments are fully disordered. Furthermore, when combined with a previous neutron scattering study and the perimeter scaling entropy of a spin jam, the analysis reveals that with decreasing $p$, i.e., doping of the nonmagnetic Ga$^{3+}$ ions, the variation in the magnetic zero-point entropy can be well explained by the combined effects of the zero-point entropy of the spin jam state and that of weakly coupled orphan spins, shedding light on the coexistence of the two types of spin states in quantum magnetism. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_17871 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Zero-point entropies of spin-jam and spin-glass states in a frustrated magnet Piyakulworawat, Chairote Thennakoon, Asiri Yang, Junjie Yoshizawa, Hideki Ueta, Daichi Sato, Taku J Sheng, Kuan Chen, Wei-Tin Pai, Woei-Wu Matan, Kittiwit Lee, Seung-Hun Strongly Correlated Electrons Disordered Systems and Neural Networks Thermodynamics studies of a prototypical quasi-two-dimensional frustrated magnet Ba$_2$Sn$_2$ZnCr$_{7p}$Ga$_{10-7p}$O$_{22}$ where the magnetic Cr$^{3+}$ ions are arranged in a triangular network of bipyramids show that the magnetic zero-point entropy for $p=0.98$ is 55(1)\% of the entropy expected when the Cr$^{3+}$ moments are fully disordered. Furthermore, when combined with a previous neutron scattering study and the perimeter scaling entropy of a spin jam, the analysis reveals that with decreasing $p$, i.e., doping of the nonmagnetic Ga$^{3+}$ ions, the variation in the magnetic zero-point entropy can be well explained by the combined effects of the zero-point entropy of the spin jam state and that of weakly coupled orphan spins, shedding light on the coexistence of the two types of spin states in quantum magnetism. |
| title | Zero-point entropies of spin-jam and spin-glass states in a frustrated magnet |
| topic | Strongly Correlated Electrons Disordered Systems and Neural Networks |
| url | https://arxiv.org/abs/2303.17871 |