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7 papers · 2 filters
First-principles study of the gap in the spin excitation spectrum of the CrI honeycomb ferromagnet
Tommaso Gorni, Oscar Baseggio, Pietro Delugas +2
The nature of the gap observed at the zone border in the spin-excitation spectrum of CrI quasi-2D single crystals is still controversial. We perform first-principles calculatio…
Homogeneous nucleation of dislocations as a pattern formation phenomenon
R. Baggio, O. U. Salman, L. Truskinovsky
Dislocation nucleation in homogeneous crystals initially unfolds as a linear symmetry-breaking elastic instability. In the absence of explicit nucleation centers, such instability…
The electronic disorder landscape of mixed halide perovskites
Yun Liu, Jean-Philippe Banon, Kyle Frohna +5
Bandgap tunability of lead mixed-halide perovskites makes them promising candidates for various applications in optoelectronics since they exhibit sharp optical absorption onsets d…
Field-linear anomalous Hall effect and Berry curvature induced by spin chirality in the kagome antiferromagnet Mn3Sn
Xiaokang Li, Jahyun Koo, Zengwei Zhu +2
During the past two decades, it has been established that a non-trivial electron wave-function topology generates an anomalous Hall effect (AHE), which shows itself as a Hall condu…
Mesoscopic tunneling in strontium titanate
Benoît Fauqué, Philippe Bourges, Alaska Subedi +6
Spatial correlation between atoms can generate a depletion in the energy dispersion of acoustic phonons. Two well known examples are rotons in superfluid helium and the Kohn anomal…
Enhancement and tuning of the defect-induced electroluminescence of ZnO mesoporous layers in the visible range
Iännis Roland, Domitille Schanne, Alexandra Bogicevic +1
We show a way to pattern the visible electroluminescence of solution-processed mesoporous ZnO layers. Our approach consists in locally changing the nanoscale morphology of the coat…