A mean field theory for the spin ladder system
Xi Dai, Zhao-bin Su
Abstract
In the present paper, we propose a mean field approach for spin ladders based upon the Jordan-Wigner transformation along an elaborately ordered path. We show on the mean field level that ladders with even number legs open a energy gap in their low energy excitation with a magnitude close to the corresponding experimental values, whereas the low energy excitation of the odd-number-leg ladders are gapless. It supports the validity of our approach. We then calculate the gap size and the excitation spectra of 2-leg-ladder system. Our result is in good agreement with both the experimental data and the numerical results.
Create a lesson
Related papers
Resolving magnetic order and dynamics with polarized neutron scattering: a practical guide to longitudinal polarization analysis
Sijie Xu, Pengcheng Dai
Korringa factor in Dirac-nodal-line systems
Takahiko Sekine, Kanoda Kazushi
Repulsion-Driven Topological Superconductivity in Twisted MoTe2
Tianle Wang, Tomohiro Soejima, Norman Y. Yao et al.
Coexisting Kondo and Weyl-like transport in kagome heavy-fermion metal, YbyCo3Ge3-xSnx
M. P. Dubbelman, R. Meduri, T. M. Kyrk et al.
Collective Modes of Fractional States Beyond Landau Levels
Peleg Emanuel, Yuval Oreg
Thermal Phase Transition of Three Dimensional Orthogonal Metals
Inho Song, Minsu Park, Hanbit Oh et al.