Influence of Dzyaloshinskii–Moriya and Kaplan–Shekhtman–Entin–Wohlman–Aharony interactions on quantum entanglement in a two-qubit Heisenberg XYZ chain

This paper investigates quantum entanglement in a two-qubit Heisenberg XYZ system with Kaplan–Shekhtman–Entin–Wohlman–Aharony and Dzyaloshinskii–Moriya couplings along the x-axis. By the concept of concurrence, the effects of these two types of interactions on thermal entanglement are studied in detail for both antiferromagnetic and ferromagnetic cases. By setting the strengths coupling of the spin, we quickly recover the Ising and XXX Heisenberg models. Additionally, we find that the influence of Kaplan–Shekhtman–Entin–Wohlman–Aharony and Dzyaloshinskii–Moriya couplings can enhance entanglement and influence the critical temperature beyond the entanglement vanishes.