Andreas Uppstu

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Rights: © 2010 American Physical Society (APS). This is the accepted version of the following article: Hancock, Y. & Uppstu, A. & Saloriutta, K. & Harju, A. & Puska, Martti J. 2010. Generalized tight-binding transport model for graphene nanoribbon-based systems. Physical Review B. Volume 81, Issue 24. 245402/1-6. ISSN 1550-235X (electronic). DOI:(More)
Graphene nanostructures, where quantum confinement opens an energy gap in the band structure, hold promise for future electronic devices. To realize the full potential of these materials, atomic-scale control over the contacts to graphene and the graphene nanostructure forming the active part of the device is required. The contacts should have a high(More)
Despite the enormous interest in the properties of graphene and the potential of graphene nanostructures in electronic applications, the study of quantum-confined states in atomically well-defined graphene nanostructures remains an experimental challenge. Here, we study graphene quantum dots (GQDs) with well-defined edges in the zigzag direction, grown by(More)
The electronic properties of graphene edges have been predicted to depend on their crystallographic orientation. The so-called zigzag (ZZ) edges haven been extensively explored theoretically and proposed for various electronic applications. However, their experimental study remains challenging due to the difficulty in realizing clean ZZ edges without(More)
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Rights: © 2014 American Physical Society (APS). This is the accepted version of the following article: Oksanen, Mika & Uppstu, Andreas & Laitinen, Antti & Cox, Daniel J. & Craciun, Monica F. & Russo, Saverio & Harju, Ari & Hakonen, Pertti J. 2014. Single-mode and multimode Fabry-Perot interference in suspended graphene. Physical Review B. Volume 89, Issue(More)
Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Andreas Uppstu Name of the doctoral dissertation Electronic properties of graphene from tight-binding simulations Publisher School of Science Unit Department of Applied Physics Series Aalto University publication series DOCTORAL DISSERTATIONS 122/2014 Field of research Theoretical and(More)
Rights: © 2012 American Physical Society (APS). This is the accepted version of the following article: Saloriutta, Karri & Uppstu, Andreas & Harju, Ari & Puska, Martti J. 2012. Ab initio transport fingerprints for resonant scattering in graphene. Physical Review B. Volume 86, Issue 23. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.86.235417, which has(More)
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