Phase Diagrams of a Quenched Bond-Mixed Ising Ferromagnet with a Transverse Field

抄録

Using the ferromagnetic stability condition, the phase diagram is investigated in a quenched bond-mixed Ising ferromagnet with a transverse field Ω on the square lattice. The fact that large families of critical lines for negative-bond mixture meet at a single point on the line of T=0 is found to be closely related with frustrations due to negative bond. However the effect of frustrations may be observed only for a small value of Ω on the relevant physical properties.