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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.21328 |
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| _version_ | 1866915808540622848 |
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| author | Nakano, Hiroki Sakai, Toru Hosokoshi, Yuko |
| author_facet | Nakano, Hiroki Sakai, Toru Hosokoshi, Yuko |
| contents | The S=2 Heisenberg antiferromagnet on the orthogonal dimer lattice is studied. The edges of the exact dimer and Neel-ordered phases in the ground state of the system are examined by the numerical diagonalization method. Our present results are discussed by combining them with previously obtained estimates for smaller-S cases. We find that an intermediate region between the exact dimer and Neel-ordered phases gradually widens as spin S is increased up to S=2. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_21328 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Numerical Diagonalization Study of the Phase Boundaries of the S=2 Heisenberg Antiferromagnet on the Orthogonal Dimer Lattice Nakano, Hiroki Sakai, Toru Hosokoshi, Yuko Materials Science Statistical Mechanics Strongly Correlated Electrons The S=2 Heisenberg antiferromagnet on the orthogonal dimer lattice is studied. The edges of the exact dimer and Neel-ordered phases in the ground state of the system are examined by the numerical diagonalization method. Our present results are discussed by combining them with previously obtained estimates for smaller-S cases. We find that an intermediate region between the exact dimer and Neel-ordered phases gradually widens as spin S is increased up to S=2. |
| title | Numerical Diagonalization Study of the Phase Boundaries of the S=2 Heisenberg Antiferromagnet on the Orthogonal Dimer Lattice |
| topic | Materials Science Statistical Mechanics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2601.21328 |