Fig. 5: Polarization rotation at the non-Ising domain walls in the BFO film on BFTO–LSMO.
From: Defeating depolarizing fields with artificial flux closure in ultrathin ferroelectrics
a, Polarization rotation profiles in the (110)pc plane across the HH and TT domain walls (deduced from Fig. 4d–g). The homochirality of the walls implies a net chirality in the BFO film, probably arising from the symmetry breaking of the in-plane-polarized BFTO buffer underneath. b, HAADF-STEM image showing the polarization rotation at the non-Ising TT domain wall in the BFO film on BFTO–LSMO. Atomically resolved imaging of BFO polar displacements in the selected areas (out of plane (Δz) and in plane (Δx)) confirms that the polarization rotates from P1 to P2 via an upward-oriented out-of-plane polarization. The ferroelectric polarization is directed opposite to these displacements and the error bars signify the standard error of the mean.
