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Dynamical Multiferroicity
Dominik Maximilian Juraschek, Michael Fechner, Alexander V. Balatsky +1
An appealing mechanism for inducing multiferroicity in materials is the generation of electric polarization by a spatially varying magnetization that is coupled to the lattice thro…
Multiferroic magnetic spirals induced by random magnetic exchanges
Andrea Scaramucci, Hiroshi Shinaoka, Maxim V. Mostovoy +4
Multiferroism can originate from the breaking of inversion symmetry caused by magnetic-spiral order. The usual mechanism for stabilizing a magnetic spiral is competition between ma…
Effects of intense optical phonon pumping on the structure and electronic properties of yttrium barium copper oxide
Michael Fechner, Nicola A. Spaldin
We investigate the structural modulations induced by optical excitation of a polar phonon mode in YBaCuO, using first-principles calculations based on density functiona…
Ultrafast Structure Switching through Nonlinear Phononics
Dominik Maximilian Juraschek, Michael Fechner, Nicola Ann Spaldin
We describe an ultrafast coherent control of the transient structural distortion arising from nonlinear phononics in ErFeO. Using density functional theory, we calculate the st…
Coupling and competition between ferroelectricity, magnetism, strain and oxygen vacancies in AMnO3 perovskites
Astrid Marthinsen, Carina Faber, Ulrich Aschauer +2
We use first-principles calculations based on density functional theory to investigate the interplay between oxygen vacancies, A-site cation size / tolerance factor, epitaxial stra…
Interplay between strain, defect charge state and functionality in complex oxides
Ulrich Aschauer, Nicola A. Spaldin
We use first-principles calculations to investigate the interplay between strain and the charge state of point defect impurities in complex oxides. Our work is motivated by recent…