Work

Numerical Diagonalization Study of the Phase Boundaries of the S = 2 Heisenberg Antiferromagnet on the Orthogonal Dimer Lattice

Year: 2026

Type: article

Abstract: 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.

Source: Journal of the Physical Society of Japan

DOI: 10.7566/jpsj.95.033704

Authors: Hiroki Nakano, Tôru Sakai, Yuko Hosokoshi

Institutions: University of Hyogo, SPring-8, National Institutes for Quantum Science and Technology, Osaka Metropolitan University

Language: English

Topic: Advanced Condensed Matter Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: University of Tokyo, University of Tsukuba, Japan Society for the Promotion of Science, RIKEN

Awards: Theoretical and Numerical Study on the Quantum Spin Liquid and Exotic Excitation of the Kagome-Lattice Antiferromagnet, Numerical study and applications of observation of the spin gap using prohibited transitions of the electron spin resonance, G4009947510, 巨大次元行列の固有値計算の高並列・高精度シミュレーションの挑戦, Creation of variable magnetic lattices of S=1 species