Field-induced chiral soliton phase in the Kitaev spin chain

The bond-dependent Ising interaction present in the Kitaev model has attracted considerable attention. The appearance of an unexpected intermediate phase under a magnetic field is particularly intriguing, and one may wonder if a similar phase occurs in the Kitaev spin chain with alternating x- and y-bond Ising interactions. Previous studies have focused on a transverse field hz and reported a direct transition to the polarized state. Here, we …