Browsing Institutt for fysikk by Title
Now showing items 983-1002 of 2654
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Gauge Dependence of the Quantum Field Theory Effective Potential
(Master thesis, 2013)Using the absolute stability requirement of the Standard Model vacuum, we compute the Higgs mass bound for the 1-loop Standard Model effective potential with gauge dependence in the $R_\xi$ gauges together with 3-loop beta ... -
Ge-capped SiGe core optical fibers
(Journal article; Peer reviewed, 2019)CO2 laser processing offers the possibility to inscribe structures within glass-clad SiGe-core fibers by altering the spatial distribution of the Si and Ge. Spatial segregation of Ge to the end of a fiber is shown via ... -
Gelling kinetics and in situ mineralization of alginate hydrogels: A correlative spatiotemporal characterization toolbox.
(Journal article; Peer reviewed, 2016)Due to their large water content and structural similarities to the extracellular matrix, hydrogels are an attractive class of material in the tissue engineering field. Polymers capable of ionotropic gelation are of special ... -
Gender Differences in Norwegian Engineering Students’ Understanding of Newtonian Mechanics
(Peer reviewed; Journal article, 2020)An investigation of the gender gap in engineering students’ understanding of Newtonian physics has been done. The results indicate a noticeable gender gap, in addition to an effect due to differences in preparation, i.e. ... -
General boundary conditions for quasiclassical theory of superconductivity in the diffusive limit: Application to strongly spin-polarized systems
(Journal article; Peer reviewed, 2015)Boundary conditions in quasiclassical theory of superconductivity are of crucial importance for describing proximity effects in heterostructures between different materials. Although they have been derived for the ballistic ... -
General bulk-viscous solutions and estimates of bulk viscosity in the cosmic fluid
(Journal article; Peer reviewed, 2016)We derive a general formalism for bulk viscous solutions of the energy-conservation equation for ρ(a,ζ) ρ(a,ζ) , both for a single-component and a multicomponent fluid in the Friedmann universe. For our purposes, these ... -
General solution of 2D and 3D superconducting quasiclassical systems: Coalescing vortices and nanoisland geometries
(Journal article; Peer reviewed, 2016)An extension of quasiclassical Keldysh-Usadel theory to higher spatial dimensions than one is crucial in order to describe physical phenomena like charge/spin Hall effects and topological excitations like vortices and ... -
Generalization of the Recursive Green's Function Approach to Spin-Orbit Coupled Graphene
(Master thesis, 2021)I denne avhandlingen har vi generalisert den Rekursive Green’s Funksjons-metoden for å studere ladning- og spinnstrømmer samt deres romfordeling i nanoflak av grafen. For å kunne simulere et realistisk system hvor ... -
Generative Adversarial Networks in X-ray Computed Tomography
(Master thesis, 2021)Computertomografi (CT) med røntgenstråler åpner opp for ikke-destruktiv bildetaking av interne strukturer i materialer. Prosessen for å ta CT-bilder består av å måle røntgenprojeksjoner av en prøve, for deretter å ... -
Geometric Aspects of Quantum Entanglement
(Doctoral thesis at NTNU;2016:253, Doctoral thesis, 2016)Summary: Entanglement is a strange feature contained in the quantum mechanical framework, first observed theoretically by Erwin Schrödinger and Albert Einstein. An inherent attribute of entanglement is non-locality, and ... -
Giant Anisotropy in the Josephson Effect and Magnetization Dynamics in Spin-Orbit Coupled Antiferromagnetic Josephson Junctions
(Master thesis, 2021)Vi benytter en Hubbard-modell til å beskrive en to-dimensjonal antiferromagnetisk Josephson kobling med Rashba-type spinn-bane kobling, og bruker modellen til å studere Josephson-strømmen og den frie energien i koblingen. ... -
Giant triplet proximity effect in π-biased Josephson junctions with spin-orbit coupling
(Journal article, 2015)In diffusive Josephson junctions the phase difference φ between the superconductors strongly influences the spectroscopic features of the layer separating them. The observation of a uniform minigap and its phase modulation ... -
Gigahertz Femtosecond Cr:ZnS Laser
(Chapter, 2014)We demonstrate the first Cr:ZnS laser with a gigahertz pulse repetition rate. The passively mode-locked by the graphene-based mirror laser provides 105 mW output power with 180 fs pulse duration and 110 pJ pulse energy. -
Ginzburg-Landau Theory for Charge Density Waves and Superconductivity
(Master thesis, 2023)Motivert av den økende interessen for Cuprate-høytemperatur-superledere, tar denne oppgaven for seg samspillet mellom to av dens symmetribrytende faser, superledning og ladningstetthetsbølger. Fra en mikroskopisk teori ... -
Ginzburg-Landau Theory for Charge Density Waves and Superconductivity
(Master thesis, 2023)Motivert av den økende interessen for Cuprate-høytemperatur-superledere, tar denne oppgaven for seg samspillet mellom to av dens symmetribrytende faser, superledning og ladningstetthetsbølger. Fra en mikroskopisk teori ... -
Glow Discharge Optical Emission Spectroscopy for Elemental Characterization of Doped TiO2 Thin Films made by Pulsed Laser Deposition
(Master thesis, 2023)Glimutladnings optisk emisjonsspektroskopi (GD-OES) har blitt brukt for å karakterisere tynnfilmprøver fremstilt ved hjelp av pulset laser deponering (PLD). De viktigste prøvene som er analysert er (Cr+N) ko-dopet TiO2-filmer ... -
Going beyond the Chandrasekhar-Clogston limit in a flatband superconductor
(Peer reviewed; Journal article, 2022)The Chandrasekhar-Clogston limit normally places stringent conditions on the magnitude of the magnetic field that can coexist with spin-singlet superconductivity, restricting the critical induced Zeeman shift to a fraction ... -
Gold and Platinum Surface Nanostructures on Highly Oriented Pyrolytic Graphite
(Master thesis, 2012)Self-assembled platinum and gold nanostructures, which are formed by evaporation and subsequent diffusion limited aggregation of metal on highly oriented pyrolytic graphite, have been studied by photoemission spectroscopy ... -
Gold Nanostructures on Graphite
(Master thesis, 2013)Gold nanoparticles supported on a graphite substrate are prepared by thermal evaporation, and subsequently studied by X-ray photoelectron spectroscopy (XPS), temperature programmed desorption (TPD) of carbon monoxide and ... -
Goldstone bosons at finite density - Study of spontaneous symmetry breaking in O(N)-symmetric theories at finite chemical potential
(Master thesis, 2017)Goldstone s theorem states that, in presence of Lorentz invariance, the number of massless modes that appear after spontaneous symmetry breaking coincides with the number of broken generators. These modes are called Goldstone ...