58 citations · 198 across the 7 of their papers we have counts for
7 papers
The isotropic Compton profile difference across the phase transition of VO
Kari O. Ruotsalainen, Juho Inkinen, Tuomas Pylkkänen +4
We studied the isotropic Compton profile of the prototypical oxide VO across the temperature induced electronic and structural phase transition at T 340 K. We sho…
Excitons in van der Waals materials: from monolayer to bulk hexagonal boron nitride
Jaakko Koskelo, Giorgia Fugallo, Mikko Hakala +3
We present a general picture of the exciton properties of layered materials in terms of the excitations of their single-layer building blocks. To this end, we derive a model excito…
First-principles analysis of the intermediate band in CuGaFeS
J. Koskelo, J. Hashemi, S. Huotari +1
We present a comprehensive study of the electronic, magnetic, and optical properties of CuGaFeS, as a promising candidate for intermediate-band (IB) solar cells. We…
Resonant X-ray Emission Spectroscopy With a Standing Wave Excitation
Kari O. Ruotsalainen, Ari-Pekka Honkanen, Stephen P. Collins +6
The Borrmann effect is the anomalous transmission of x rays in perfect crystals under diffraction conditions. It arises from the interference of the incident and diffracted waves,…
Exciton energy-momentum map of hexagonal boron nitride
Giorgia Fugallo, Matteo Aramini, Jaakko Koskelo +6
Understanding and controlling the way excitons propagate in solids is a key for tailoring materials with improved optoelectronic properties. A fundamental step in this direction is…
Comparison of chain versus sheet crystal structures for cyanides CN ( = Cu-Au) and dicarbides C ( = Be-Ba; Zn-Hg). Alternatives to graphene ?
P. Zaleski-Ejgierd, P. Pyykkö, M. Hakala
The cyanides CN, =Cu, Ag, Au, have experimentally a structure with hexagonally packed, infinite --CN--CN- chains. Following our earlier study for AuCN, we now predict t…