spin-spin coupling/ exact partition functionarbitrary-length laddersq-state Potts modelnext-nearest-neighbor spin-spin couplingsantiferromagnetic systemferromagnetic systemWe present exact calculations of partition function Z of the q-state Potts model with next-nearest-neighbor spinu2013spin couplings, both...
Ising model with antiferromagnetic next-nearest-neighbor coupling: spin correlations and disorder points. Phys. Rev. B 1, 4405-4409 (1970)... Stephenson,John - 《Journal of Applied Physics》 被引量: 41发表: 1971年 Three-dimensional Ising model with nearest- and next-nearest-neighbor interaction...
We investigate the topological phase transitions on the square-octagon lattice with an intrinsic spin-orbit coupling and an additional real next-nearest-neighbor hopping. We study the evolution of the band structure under the next-nearest-neighbor hopping parameters. Based on the spin Chern numbers,...
The sign in front the gradient in (41) is determined by the relation of the coupling constants for nearest-neighbor and next-nearest-neighbor interactions. We can list all possible cases: (1) If the coupling constants of the next-nearest-neighbor interaction is − 1 4 g2 < g4 < −...
2015-01-23上传 On the next to nearest neighbor and chiral-spin correlation functions in generalized XXX ch 文档格式: .pdf 文档大小: 154.2K 文档页数: 6页 顶/踩数: 0/0 收藏人数: 0 评论次数: 0 文档热度: 文档分类: IT计算机--服务器 ...
The previously observed transition at around T ~18 K is interpreted as a subtle change in dynamics for a minority of the spins coupling to the muon that we interpret as spins locking into clusters. The dynamics of this fraction of spins freeze below a temperature T_{SF}~8 K, while a ...
continuum of compensation temperaturesWe investigate the magnetic properties of the mixed spin-1/2 and spin-1 Ising ferrimagnetic system with four-spin interaction J4 and next-nearest neighbor (NNN) coupling J. We perform exact ground-state calculations and use the finite cluster approximation, ...
next-nearest-neighbor couplingWe study the energy relaxation process in one-dimensional (1D) lattices with next-nearest-neighbor (NNN) couplings. This relaxation is produced by adding damping (absorbing conditions) to the boundary (free-end) of the lattice. Compared to the 1D lattices with on-...
It is suggested that two-dimensional antiferromagnets, such as manganese formate dihydrate, may exhibit disorder points.doi:10.1139/p70-266StephensonJohnRevue Canadienne De Physique
Electron instabilities in the Hubbard model with the next nearest neighbor coupling are calculated by exact diagonalization in finite, two-dimensional Betts cells (lattices). A viable spin and charge coherent pairing, signaled by quantum critical points and a negative charge gap region, is found in...