Low-lying excitations of the three-leg spin tube: A density-matrix renormalization group study
Low-lying excitations of the three-leg spin tube: A density-matrix renormalization group study
复制标题
三腿旋转管的低位激发:密度矩阵重正化群研究
DOI:
10.1103/physrevb.78.054421
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发表时间:
2008
影响因子:
3.7
通讯作者:
M. Arikawa
中科院分区:
文献类型:
--
作者:
S. Nishimoto;M. Arikawa
Using the (dynamical) density-matrix renormalization group method, we study the low-energy physics of three-leg antiferromagnetic Heisenberg model where the periodic boundary conditions are applied in the rung direction. We confirm that the spin excitations are always gapped as long as the intraring couplings form a regular triangle. From precise finite-size-scaling analyses of the spin gap and dimerization order parameter, we also find that the spin gap is collapsed by very small asymmetric modulation of the intraring couplings. Moreover, the dynamical spin structure factors on the intraleg and interleg correlations are calculated. It is demonstrated that the low-lying structure of the interleg spectra is particularly affected by the asymmetric modulation.
DOI:
--
发表时间:
2005
期刊:
Physica E 23・3-4
影响因子:
--
作者:
T.Sakai;M.Matsumoto;K.Okunishi;K.Okamoto;他
通讯作者:
他
DOI:
--
发表时间:
2007
期刊:
Physical Review B 75
影响因子:
--
作者:
M. Wubs;A. Kotani;Y. Harada;田中 智;Y. Mizumoto;S.Kimiura;K. Saito;S.Kimura;S. Tanaka;S. Kimura;Y. Yamashita;T.Sakai;Y. Mizumoto;M.Sato;K. Saito;M.Sato
通讯作者:
M.Sato
DOI:
--
发表时间:
2007
期刊:
Phys.Rev.B 75
影响因子:
--
作者:
M.Sato;M.Oshikawa
通讯作者:
M.Oshikawa