activity
20222024
most citedLimits of the phonon quasi-particle picture at the cubic-to-tetragonal phase transition in halide perovskites

53 citations · 131 across the 5 of their papers we have counts for

collaborators

5 papers

cond-mat.mtrl-sci2024★ 17 cited

Construction and sampling of alloy cluster expansions -- A tutorial

Pernilla Ekborg-Tanner, Petter Rosander, Erik Fransson +1

Crystalline alloys and related mixed systems make up a large family of materials with high tunability which have been proposed as the solution to a large number of energy related m…

cond-mat.mes-hall2023★ 30 cited

Tensorial properties via the neuroevolution potential framework: Fast simulation of infrared and Raman spectra

Nan Xu, Petter Rosander, Christian Schäfer +7

Infrared and Raman spectroscopy are widely used for the characterization of gases, liquids, and solids, as the spectra contain a wealth of information concerning in particular the…

cond-mat.mtrl-sci2023★ 20 cited

Understanding correlations in BaZrO3:Structure and dynamics on the nano-scale

Erik Fransson, Petter Rosander, Paul Erhart +1

Barium zirconate BaZrO3 is one of few perovskites that is claimed to retain an average cubic structure down to 0K at ambient pressure, while being energetically very close to a tet…

cond-mat.mtrl-sci2023★ 11 cited

Anharmonicity of the antiferrodistortive soft mode in barium zirconate BaZrO

Petter Rosander, Erik Fransson, Cosme Milesi-Brault +6

Barium zirconate (BaZrO) is one of the very few perovskites that is claimed to retain an average cubic structure down to \SI{0}{\K}, while being energetically very close to an…

cond-mat.mtrl-sci2022★ 53 cited

Limits of the phonon quasi-particle picture at the cubic-to-tetragonal phase transition in halide perovskites

Erik Fransson, Petter Rosander, Fredrik Eriksson +3

The soft modes associated with continuous-order phase transitions are associated with strong anharmonicity. This leads to the overdamped limit where the phonon quasi-particle pictu…