Blar i NTNU Open på forfatter "Røst, Håkon Ivarssønn"
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Electron-magnon coupling and quasiparticle lifetimes on the surface of a topological insulator
Mæland, Kristian; Røst, Håkon Ivarssønn; Wells, Justin William; Sudbø, Asle (Peer reviewed; Journal article, 2021)The fermionic self-energy on the surface of a topological insulator proximity coupled to ferro- and antiferromagnetic insulators is studied. An enhanced electron-magnon coupling is achieved by allowing the electrons on the ... -
Electronic and structural properties of the natural dyes curcumin, bixin and indigo
Michels, Leander; Richter, Annika; Chellappan, Rajesh Kumar; Røst, Håkon Ivarssønn; Behsen, Alenka Djarmila; Wells, Kristin Høydalsvik; Leal, Luciano; Santana, Vilany; Blawid, Rosana; da Silva, Geraldo J.; Cooil, Simon; Wells, Justin William; Blawid, Stefan (Peer reviewed; Journal article, 2021)An optical, electronic and structural characterisation of three natural dyes potentially interesting for application in organic solar cells, curcumin (C21H20O6), bixin (C25H30O4) and indigo (C16H10N2O2), was performed. ... -
Low-Temperature Growth of Graphene on a Semiconductor
Røst, Håkon Ivarssønn; Chellappan, Rajesh Kumar; Strand, Frode Sneve; Grubišić-Čabo, Antonija; Reed, Benjamen P.; Prieto, Mauricio J.; Tǎnase, Liviu C.; Caldas, Lucas de Souza; Wongpinij, Thipusa; Euaruksakul, Chanan; Schmidt, Thomas; Tadich, Anton; Cowie, Bruce; Li, Zheshen; Cooil, Simon; Wells, Justin (Peer reviewed; Journal article, 2021)The industrial realization of graphene has so far been limited by challenges related to the quality, reproducibility, and high process temperatures required to manufacture graphene on suitable substrates. We demonstrate ... -
Novel Approaches for Exploring Electron Interactions in Reduced Dimensions
Røst, Håkon Ivarssønn (Doctoral theses at NTNU;2022:271, Doctoral thesis, 2022)Summary: Arguably, some of the most intriguing phenomena in contemporary condensed matter research can be observed in systems of “reduced” dimensions. In cases where electrons are not allowed to propagate freely ... -
A Simplified Method for Patterning Graphene on Dielectric Layers
Røst, Håkon Ivarssønn; Reed, Benjamen P.; Strand, Frode Sneve; Durk, Joseph A.; Evans, D. Andrew; Grubišić-Čabo, Antonija; Wan, Gary; Cattelan, Mattia; Prieto, Mauricio J.; Gottlob, Daniel M.; Tǎnase, Liviu C.; De Souza Caldas, Lucas; Schmidt, Thomas; Tadich, Anton; Cowie, Bruce C. C.; Chellappan, Rajesh Kumar; Wells, Justin William; Cooil, Simon P. (Peer reviewed; Journal article, 2021)The large-scale formation of patterned, quasi-freestanding graphene structures supported on a dielectric has so far been limited by the need to transfer the graphene onto a suitable substrate and contamination from the ... -
Transfer-Free and Patterned Growth of Epitaxial Graphene on Insulator - For Applications in Novel Graphene-Based Radiation Detectors
Røst, Håkon Ivarssønn (Master thesis, 2018)A proposed radiation detector design utilizes graphene's strong conductivity response to small changes in electric field for sensing ionization products. The transport properties of graphene has shown great potential for ...