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Browsing Greinar- HÍ by Subject "Atómfræði"

Browsing Greinar- HÍ by Subject "Atómfræði"

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  • Mantovan, R.; Fallica, R.; Mokhles Gerami, A.; Mølholt, T. E.; Wiemer, C.; Longo, M.; Gunnlaugsson, Haraldur; Johnston, K.; Masenda, H.; Naidoo, D.; Ncube, M.; Bharuth-Ram, K.; Fanciulli, M.; Gíslason, Hafliði Pétur; Langouche, G.; Olafsson, Sveinn; Weyer, G. (Springer Nature, 2017-08-15)
    The underlying mechanism driving the structural amorphous-to-crystalline transition in Group VI chalcogenides is still a matter of debate even in the simplest GeTe system. We exploit the extreme sensitivity of 57Fe emission Mössbauer spectroscopy, ...
  • Holmlid, Leif; Olafsson, Sveinn (Elsevier BV, 2019-06)
    This work reports identification of muons by their characteristic life-time of 2.20 μs after laser-induction of their precursor mesons, both kaons K± and KL 0 and pions π± in ultra-dense hydrogen H(0). The pair-production signal from scattered muons ...
  • Maras, Emile; Saito, Mitsuhiro; Inoue, Kazutoshi; Jónsson, Hannes; Ikuhara, Yuichi; McKenna, Keith Patrick (Elsevier BV, 2019-01-15)
    A global optimization procedure is used to predict the structure and electronic properties of the b = c[001] edge dislocation in rutile TiO2. Over 1000 different atomic configurations have been generated using both semi-empirical and density functional ...
  • Kateb, Movaffaq; Gudmundsson, Jon Tomas; Ingvarsson, Snorri (AIP Publishing, 2019-03-08)
    We investigate the effect of atomic ordering on the magnetic anisotropy of Ni80Fe20 at.% (Py). To this end, Py films were grown epitaxially on MgO(001) using dc magnetron sputtering (dcMS) and high power impulse magnetron sputtering (HiPIMS). Aside ...
  • Schrautzer, Hendrik; von Malottki, Stephan; Heinze, Stefan; Bessarab, Pavel (American Physical Society (APS), 2022-01-11)
    Theoretical calculations of thermally activated decay of skyrmions in systems comprising several magnetic monolayers are presented, with a special focus on bilayer systems. Mechanisms of skyrmion collapse are identified and corresponding energy barriers ...
  • Ohlsson, Tommy; Pernow, Marcus (Springer Science and Business Media LLC, 2019-06-18)
    We consider numerical fits to non-supersymmetric SO(10)-based models in which neutrino mass is generated by the type-I or type-II seesaw mechanism or a combination of both. The fits are performed with a sophisticated top-down procedure, taking into ...
  • Bobev, Nikolay; Gautason, Fridrik F; Pilch, Krzysztof; Suh, Minwoo; van Muiden, Jesse (Springer Science and Business Media LLC, 2020-05-01)
    We find the holographic dual to the three classes of superconformal Janus interfaces in N = 4 SYM that preserve three-dimensional N = 4, N = 2, and N = 1 supersymmetry. The solutions are constructed in five-dimensional SO(6) maximal gauged supergravity ...
  • Angel Ramelli, Juan Fernando; Berthiere, C.; Giangreco Puletti, Valentina; Thorlacius, Larus (Springer Science and Business Media LLC, 2020-09)
    We investigate quantum entanglement in a non-relativistic critical system by calculating the logarithmic negativity of a class of mixed states in the quantum Lifshitz model in one and two spatial dimensions. In 1+1 dimensions we employ a correlator ...
  • Morina, Skender; Dini, Kevin Tanguy Elian; Iorsh, Ivan; Shelykh, Ivan (American Chemical Society (ACS), 2018-02-12)
    We propose an experimentally friendly scheme for trapping quasi-relativistic electrons in graphene by an electromagnetic beam with circular polarization and a spatially inhomogeneous profile with an intensity dip. The trapping is achieved due to the ...
  • Ghosh, Monojit; Ohlsson, Tommy; Rosauro-Alcaraz, Salvador (Springer Science and Business Media LLC, 2020-03-01)
    We present a comprehensive analysis in the 3+1 active-sterile neutrino oscillation scenario for the sensitivity of the ESSnuSB experiment in the presence of light sterile neutrinos assuming both a far (FD) and a near (ND) detector. Our analysis show ...
  • Bobev, Nikolay; Bomans, Pieter; Gautason, Friðrik Freyr; Minahan, Joseph A.; Nedelin, Anton (Springer Science and Business Media LLC, 2020-03-01)
    Using supersymmetric localization we compute the free energy and BPS Wilson loop vacuum expectation values for planar maximally supersymmetric Yang-Mills theory on Sd in the strong coupling limit for 2 ≤ d < 6. The same calculation can also be performed ...
  • Meloni, Davide; Ohlsson, Tommy; Pernow, Marcus (Springer Science and Business Media LLC, 2020-09-10)
    Despite the successes of the Standard Model of particle physics, it is known to suffer from a number of deficiencies. Several of these can be addressed within non-supersymmetric theories of grand unification based on SO(10). However, achieving gauge ...
  • Bobev, Nikolay; Bomans, Pieter; Gautason, Fridrik F (Springer Science and Business Media LLC, 2020-06-01)
    Large classes of AdSpsupergravity backgrounds describing the IR dynamicsofp-branes wrapped on a Riemann surface are determined by a solution to the Liouvilleequation. The regular solutions of this equation lead to the well-known wrapped branesupergravity ...