Singular ferromagnetic susceptibility of the transverse-field Ising antiferromagnet on the triangular lattice

Sounak Biswas, Kedar Damle

A transverse magnetic field $\Gamma$ is known to induce antiferromagnetic three-sublattice order of the Ising spins ${\sigma }^z$ in the triangular lattice Ising antiferromagnet at low enough t…