Benjamin A. D. Williamson

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cond-mat.mtrl-sci2025

Local indirect magnetoelectric coupling at twin walls in CaMnO $_{3}$

Ida C. Skogvoll, Benjamin A. D. Williamson, Sverre M. Selbach

Ferroelastic twin walls in centrosymmetric perovskites can host emergent polar and magnetic properties forbidden in the bulk. We use density functional theory calculations to study…

cond-mat.mtrl-sci2025

Domain Walls and Defects in Ferroelectric Inorganic Halide Perovskites CsGeX $_{3}$ (X = Cl, Br, I)

Kristoffer Eggestad, Benjamin A. D. Williamson, Sverre M. Selbach

Among all-inorganic halide perovskites, the only known ferroelectrics are the family of CsGeX $_{3}$ (X = Cl, Br, I). Here, we study their ferroelectric domain walls (DWs) and common…

cond-mat.mtrl-sci2025

Finite-Temperature Ferroelectric Phase Transitions from Machine-Learned Force Fields

Kristoffer Eggestad, Ida C. Skogvoll, Ãystein Gullbrekken +2

Simulating finite temperature phase transitions from first-principles is computationally challenging. Recently, molecular dynamics (MD) simulations using machine-learned force fiel…

Local indirect magnetoelectric coupling at twin walls in CaMnO3​

Domain Walls and Defects in Ferroelectric Inorganic Halide Perovskites CsGeX3​ (X = Cl, Br, I)

Finite-Temperature Ferroelectric Phase Transitions from Machine-Learned Force Fields

Local indirect magnetoelectric coupling at twin walls in CaMnO $_{3}$

Domain Walls and Defects in Ferroelectric Inorganic Halide Perovskites CsGeX $_{3}$ (X = Cl, Br, I)