Anisotropic magnetoresistance in LaAlO$_3$/SrTiO$_3$ (111) interface

The oxide interfaces can be tailored by controlling the crystal symmetry, which can be achieved by changing the crystallographic orientation of the interface. For example, the LaAlO$_3$/SrTiO$_3$ (111) interface has a hexagonal symmetry in contrast to fourfold symmetry of (100) and (110) interfaces. Here, we present the in-plane anisotropic magnetoresistance (AMR) measurements of LaAlO$_3$/SrTiO$_3$ (111) interface. Our AMR data indicates the presence of crystalline six-fold anisotropic component due to the symmetry of the interface. Moreover, we observe an additional uniaxial AMR contribution, which presumably originates from the domain boundaries present in SrTiO$_3$ substrate.