Influence of the spin quantum number $s$ on the zero-temperature phase transition in the square lattice $J$-$J^{\prime }$ model

R. Darradi, J. Richter, D. J. J. Farnell

We investigate the phase diagram of the Heisenberg antiferromagnet on the square lattice with two different nearest-neighbor bonds $J$ and $J^{\prime }$ ($J$-$J^{\prime }$ model) at zero temperature…