TY - JOUR
T1 - Cancellation of oscillatory behaviours in incommensurate region
AU - Murashima, Takahiro
AU - Nomura, Kiyohide
PY - 2007/4/11
Y1 - 2007/4/11
N2 - In several frustrated systems, incommensurate behaviours are often observed. For the S ≤ 1 bilinear-biquadratic model, we show that the main oscillatory behaviour, which is proportional to the free edge spins, is eliminated in the incommensurate subphase, considering the average of triplet and singlet energy spectra under open boundary conditions. In the same way, the π-mode oscillation is also removed in the commensurate subphase. Moreover, we find that higher-order corrections are exponentially decaying from an analysis of small-size data.
AB - In several frustrated systems, incommensurate behaviours are often observed. For the S ≤ 1 bilinear-biquadratic model, we show that the main oscillatory behaviour, which is proportional to the free edge spins, is eliminated in the incommensurate subphase, considering the average of triplet and singlet energy spectra under open boundary conditions. In the same way, the π-mode oscillation is also removed in the commensurate subphase. Moreover, we find that higher-order corrections are exponentially decaying from an analysis of small-size data.
UR - http://www.scopus.com/inward/record.url?scp=33947657971&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33947657971&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/19/14/145210
DO - 10.1088/0953-8984/19/14/145210
M3 - Article
AN - SCOPUS:33947657971
SN - 0953-8984
VL - 19
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 14
M1 - 145210
ER -