Pinning of antiferromagnetic domain walls and domain structure in ultrathin <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>La</mml:mi> <mml:m
We report the evolution of the antiferromagnetic domain structure of epitaxial La 0.45 Sr 0.55 MnO 3 (LSMO) ultrathin films with thickness in the range from 5–50 unit cells (uc), using x-ray photoemission electron microscopy (XPEEM). While the 5 uc thick LSMO shows no magnetic contr...