The triangular Ising model with nearest- and next-nearest-neighbor couplings in a field

Xiaofeng Qian, Henk W. J. Bloete

We study the Ising model on the triangular lattice with nearest-neighbor couplings $K_{\mathrm{nn}}$, next-nearest-neighbor couplings $K_{\mathrm{nnn}}>0$, and a magnetic field $H$. This wor…