The spin-S Heisenberg antiferromagnet on the orthogonal-dimer lattice

被引：0
作者：
Nakano, Hiroki [1 ]
Sakai, Toru [1 ,2 ]
机构：
[1] Univ Hyogo, Grad Sch Sci, Kamigori, Hyogo 6781297, Japan
[2] Natl Inst Quantum & Radiol Sci & Technol, SPring 8, Sayo, Hyogo 6795148, Japan
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2024年 / 36卷 / 45期
关键词：
spin-S Heisenberg antiferromagnet; orthogonal-dimer lattice; Lanczos method; SHASTRY-SUTHERLAND MODEL; EXACT GROUND-STATE; SYSTEM;
D O I：
10.1088/1361-648X/ad6522
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The spin-S Heisenberg antiferromagnet on the orthogonal-dimer lattice is studied. In most of the investigations of the antiferromagnet on this lattice beginning with the study by Shastry and Sutherland, the S=1/2 case has intensively been treated. In the present study, the cases of S = 1 and 3/2 are particularly treated by the numerical-diagonalization method based on the Lanczos algorithm applied to finite-size clusters. We successfully capture the edge of the exact-dimer phase and that of the N & eacute;el-ordered phase. A significant finding is the existence of an intermediate phase between both the edges irrespective of spin-S.
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页数：8
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