Numerical Diagonalization Study of the Phase Boundaries of the <i>S</i> = 2 Heisenberg Antiferromagnet on the Orthogonal Dimer Lattice
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.
Authors
- Hiroki Nakano (ORCID: https://orcid.org/0000-0003-1978-4987)
- Yuko Hosokoshi
- Tôru Sakai
Institutions
- University of Hyogo (JP)
- SPring-8 (JP)
- National Institutes for Quantum Science and Technology (JP)
- Osaka Metropolitan University (JP)
- Tokyo Metropolitan University (JP)
Publication Details
- Journal
- Journal of the Physical Society of Japan
- Published
- 2026-02-16
- DOI
- https://doi.org/10.7566/jpsj.95.033704
- Primary Topic
- Physics of Superconductivity and Magnetism
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- University of Tokyo
- University of Tsukuba
- RIKEN