Quantum Monte Carlo simulation of the ferroelectric or ferrielectric nanowire with core shell morphology

• The hysteresis behaviors and the electric properties of a nanowire have been investigated using QMCS.
• The system can exhibit triple hysteresis loops.
• Increasing Ω or T, these triple loops turn first to one hysteresis loop before disappearing for higher value of Ω or T.

By using the Quantum Monte Carlo simulation; the electric properties of a nanowire, consisting of a ferroelectric core of spin-1/2 surrounded by a ferroelectric shell of spin-1/2 with ferro- or anti-ferroelectric interfacial coupling have been studied within the framework of the Transverse Ising Model (TIM). We have examined the effects of the shell coupling Js, the interfacial coupling JInt, the transverse field Ω, and the temperature T on the hysteresis behavior and on the electric properties of the system. The remanent polarization and the coercive field as a function of the transverse field and the temperature are examined. A number of characteristic behavior have been found such as the appearance of triple hysteresis loops for appropriate values of the system parameters.