Electron polaron at neutral <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mn>180</mml:mn> <mml:mo>∘</mml:mo> </mml:msup> </mml:math>
We use density functional theory with a Hubbard correction to investigate Ti-centered electron polarons at neutral PbO-centered 180 ∘ domain walls in tetragonal PbTiO 3 . The Hubbard parameter for Ti 3 d states is determined using the finite-size-corrected polaronic energy-level align...