Controlling the all-in-all-out magnetic domains in pyrochlore iridate thin films and heterostructures

摘要

Domain walls of ferromagnetic or ferroelectric materials have attracted little attention as active elements of devices, but rather are considered to form as metastable objects of ferroic domains. In the case of ferromagnetic metal, domain walls frequently act as scatterers of electrons, deteriorating the device operation. Here we present transport properties of pyrochlore iridate thin films and heterosturctures, where metallic conduction at the domain walls are theoretically proposed while the bulk is kept insulating in stark contrast to conventional ferromagnetic metal.