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Fletta eftir höfundi "Torfason, Kristinn"

Fletta eftir höfundi "Torfason, Kristinn"

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    Excitons in core-shell nanowires with polygonal cross sections 
    Sitek, Anna; Urbaneja Torres, Miguel; Torfason, Kristinn; Gudmundsson, Vidar; Bertoni, Andrea; Manolescu, Andrei (American Chemical Society, 2018-04-21)
    The distinctive prismatic geometry of semiconductor core-shell nanowires leads to complex localization patterns of carriers. Here, we describe the formation of optically active in-gap excitonic states induced by the interplay between localization of ...
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    Molecular Dynamics Simulations of Field Emission From a Prolate Spheroidal Tip 
    Torfason, Kristinn; Valfells, Agust; Manolescu, Andrei (ArXiv, 2016-08)
    High resolution molecular dynamics simulations with full Coulomb interactions of electrons are used to investigate field emission from a prolate spheroidal tip. The space charge limited current is several times lower than the current calculated with ...
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    Simulation of short pulse photoemission in a microdiode with implications for optimal beam brightness 
    Árnason, Hákon Örn; Torfason, Kristinn; Manolescu, Andrei; Valfells, Ágúst (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Molecular dynamics simulations, with full Coulomb interaction, are used to model short-pulse photoemission from a finite area in a microdiode. We demonstrate three emission regimes, source-limited emission, space-charge-limited emission for short pulses, ...