O
Olof Karis
Researcher at Uppsala University
Publications - 120
Citations - 3225
Olof Karis is an academic researcher from Uppsala University. The author has contributed to research in topics: Electronic structure & Absorption spectroscopy. The author has an hindex of 28, co-authored 120 publications receiving 2693 citations.
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Journal ArticleDOI
Near-room-temperature colossal magnetodielectricity and multiglass properties in partially disordered La2NiMnO6
Debraj Choudhury,Pranab K. Mandal,Roland Mathieu,Abhijit Hazarika,S. Rajan,A. Sundaresan,Umesh V. Waghmare,Ronny Knut,Olof Karis,Per Nordblad,D. D. Sarma,D. D. Sarma,D. D. Sarma +12 more
TL;DR: This work establishes a unique way to obtain colossal magnetodielectricity, independent of any striction effects, by engineering the asymmetric hopping contribution to the dielectric constant via the tuning of the relative-spin orientations between neighboring magnetic ions in a transition-metal oxide system.
Journal ArticleDOI
The adsorption structure of glycine adsorbed on Cu(110); comparison with formate and acetate/Cu(110)
J. Hasselström,Olof Karis,Martin Weinelt,Nial Wassdahl,Anders Nilsson,M. Nyberg,Lars G. M. Pettersson,Mahesh G. Samant,Joachim Stöhr +8 more
TL;DR: In this paper, the molecular orientation of an ordered monolayer of glycine adsorbed on Cu(110) has been studied using X-ray Photoelectron Spectroscopy (XPS), Near Edge Xray Absorption Fine Structure (NEXAFS), XPD, Low-Energy Electron Diffraction (LEED) and theoretical calculations.
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An effective approach of vapour assisted morphological tailoring for reducing metal defect sites in lead-free, (CH3NH3)3Bi2I9 bismuth-based perovskite solar cells for improved performance and long-term stability
Sagar M. Jain,Sagar M. Jain,Dibya Phuyal,Matthew L. Davies,Meng Li,Meng Li,Bertrand Philippe,Catherine De Castro,Zhen Qiu,Jinhyun Kim,Trystan Watson,Wing C. Tsoi,Olof Karis,Håkan Rensmo,Gerrit Boschloo,Tomas Edvinsson,James R. Durrant,James R. Durrant +17 more
TL;DR: In this paper, a controlled, stepwise formation of methylammonium bismuth iodide (CH3NH3) films via the vapour assisted solution process (VASP) by exposing BiI3 films to CH3...
Journal Article
Vanishing Magnetic Interaction in Ferromagnetic Thin Films
Jonathan Hunter Dunn,Olof Karis,Cecilia Andersson,Dimitri Arvanitis,Roger Carr,Igor A. Abrikosov,Biplab Sanyal,Lars Bergqvist,Olle Eriksson +8 more
TL;DR: In this article, the magnetic and structural properties of ultra-thin 3D transition metals films have been investigated, in particular Fe, Ni and Co films, by performing XMCD on Fe/Ag(100) and observing a spin reorientation from in-plane to out-ofplane as the Fe thickness is lowered.
Journal ArticleDOI
Two-dimensional van der Waals spinterfaces and magnetic-interfaces
TL;DR: In this paper, the authors studied the spin-dependent transport and spin inversion effects at 2D ferromagnetic junctions with prominent 2D crystals such as graphene, hexagonal boron nitride, and transition metal dichalcogenides.