Author

Karsten Albe

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Open access Oct 2026

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...

Mohammad Amirabbasi, Jochen Rohrer, Karsten Albe · PHYSICAL REVIEW MATERIALS · 0 citations

Open access Sep 2026

Precise Nanoscale Mapping of Electric Fields Across Random Grain Boundaries in Polycrystalline Oxides Using Precession-Assisted 4D-STEM.

Space charge layers (SCLs) at grain boundaries play a crucial role in modulating electric fields and thereby influence functional properties of materials. However, experimental analysis of these localized electric fields and the corresponding charge distribution remains challenging. Conventional center-of-mass (CoM) an...

Sang-Jun Kang, Hyeyoung Cho, Maximilian Töllner et al. · Small · 0 citations