期刊论文详细信息
Instability of isolated triplet excitations on the Shastry-Sutherland lattice | |
Article | |
关键词: DIMER GROUND-STATE; MAGNETIZATION PLATEAUS; SRCU2(BO3)(2); ORDER; MODEL; | |
DOI : 10.1103/PhysRevB.65.212406 | |
来源: SCIE |
【 摘 要 】
Configurations of singlets and triplets on the Shastry-Sutherland lattice (SSL) have been proposed in the literature as variational ground states of the Shastry-Sutherland model at a fixed magnetization M. We prove that isolated triplet excitations on the SSL are unstable if the coupling alpha falls below a critical value alpha(c)approximate to2.0. The instability should be visible in the compound SrCu2(BO3)(2), where a coupling alpha*=1.48 is realized.
【 授权许可】
Free