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Browsing by Subject "Atómfræði"

Browsing 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 ...
  • Angel Ramelli, Juan Fernando (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2020-11)
    In recent years, the study of entanglement properties of quantum field theories has led to deep insights in fields as diverse as quantum gravity and condensed matter physics. Originating as effective field theories for certain quantum dimer models, the ...
  • 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 ...
  • Elíasson, Ottó (Faculty of Science and Technology of Århus University, 2019-11)
    This thesis covers experimental work conducted within two distinct fields of cold-atom physics. The first part describes an experiment capable of spatially-selective dispersive measurements of a cold-atomic system in part or in whole, by virtue of a ...
  • 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 ...
  • Carney, Daniel; Svavarsson, Halldor; Hemmati, Hafez; Fannin, Alexander; Yoon, Jae; Magnusson, Robert (MDPI AG, 2019-02-21)
    Fabrication and sensor application of a simple plasmonic structure is described in this paper. The sensor element consists of nano-patterned gold film brought about from two-dimensional periodic photoresist templates created by holographic laser ...
  • 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 ...