Browsing NTNU Open by Author "Wells, Justin William"
Now showing items 1-11 of 11
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Advanced Photoemission Studies of Low-Dimensional Quantum Materials
Strand, Frode Sneve (Doctoral theses at NTNU;2025:54, Doctoral thesis, 2025)The role of low-dimensional materials is becoming increasingly important for future quantum devices as conventional semiconductor technology is approaching its physical limit. In particular, electrons in two-dimensional ... -
Disentangling electron-boson interactions on the surface of a familiar ferromagnet
Røst, Håkon; Mazzola, Federico; Bakkelund, Johannes; Åsland, Anna Cecilie; Hu, Jinbang; Cooil, Simon Phillip; Polley, Craig; Wells, Justin William (Peer reviewed; Journal article, 2024)We report energy renormalizations from electron-phonon and electron-magnon interactions in spin minority surface resonances on Ni(111). The different interactions are identified, disentangled, and quantified from the ... -
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. ... -
Enhanced hydrophobicity of CeO2 thin films: Role of the morphology, adsorbed species and crystallography
Mamedov, Damir; Åsland, Anna Cecilie; Cooil, Simon Phillip; Røst, Håkon; Bakkelund, Johannes; Allaniyazov, Atabek; Wells, Justin William; Karazhanov, Smagul (Peer reviewed; Journal article, 2023)In order to guarantee the long-term efficiency of hydrophobic materials in real-world situations, it is necessary that their surfaces are highly resistant to scratching, fouling and misting. Furthermore, for the specific ... -
Initial stages of water absorption on CeO2 surfaces at very low temperatures for understanding anti-icing coatings
Åsland, Anna Cecilie; Cooil, Simon Phillip; Mamedov, Damir; Røst, Håkon; Bakkelund, Johannes; Li, Z.; Karazhanov, Smagul; Wells, Justin William (Journal article; Peer reviewed, 2024)Anti-icing coatings are intended to prevent ice formation on surfaces, minimising the risk of surface-related damage and also reducing ice-related hazards in society. We demonstrate the usefulness of x-ray photoelectron ... -
One-dimensional spin-polarized surface states: A comparison of Bi(112) with other vicinal bismuth surfaces
Åsland, Anna Cecilie; Bakkelund, Johannes; Thingstad, Even; Røst, Håkon; Cooil, Simon Phillip; Hu, Jinbang; Vobornik, Ivana; Fujii, Jun; Sudbø, Asle; Wells, Justin William; Mazzola, Federico (Peer reviewed; Journal article, 2023)Vicinal surfaces of bismuth are unique test beds for investigating one-dimensional (1D) spin-polarized surface states that may one day be used in spintronic devices. In this paper, such states have been observed for the ... -
Phonon-Mediated Quasiparticle Lifetime Renormalizations in Few-Layer Hexagonal Boron Nitride
Røst, Håkon; Cooil, Simon Phillip; Åsland, Anna Cecilie; Hu, Jinbang; Ali, Ayaz; Taniguchi, Takashi; Watanabe, Kenji; Belle, Branson Delano; Holst, Bodil; Sadowski, Jerzy; Mazzola, Federico; Wells, Justin William (Peer reviewed; Journal article, 2023)Understanding the collective behavior of the quasiparticles in solid-state systems underpins the field of non-volatile electronics, including the opportunity to control many-body effects for well-desired physical phenomena ... -
Probing the Atomic Arrangement of Subsurface Dopants in a Silicon Quantum Device Platform
Røst, Håkon; Tosi, Ezequiel; Strand, Frode Sneve; Åsland, Anna Cecilie; Lacovig, Paolo; Lizzit, Silvano; Wells, Justin William (Peer reviewed; Journal article, 2023)High-density structures of subsurface phosphorus dopants in silicon continue to garner interest as a silicon-based quantum computer platform; however, a much-needed confirmation of their dopant arrangement has been lacking. ... -
Probing the Atomic Arrangement of Subsurface Dopants in a Silicon Quantum Device Platform
Røst, Håkon; Tosi, Ezequiel; Strand, Frode Sneve; Åsland, Anna Cecilie; Lacovig, Paolo; Lizzit, Silvano; Wells, Justin William (Peer reviewed; Journal article, 2023)High-density structures of subsurface phosphorus dopants in silicon continue to garner interest as a silicon-based quantum computer platform; however, a much-needed confirmation of their dopant arrangement has been lacking. ... -
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 ...