Browsing Institutt for fysikk by Title
Now showing items 2575-2594 of 2708
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Tunable electro-optical properties of doped chiral graphene nanoribbons
(Peer reviewed; Journal article, 2021)The electro-optical properties of doped chiral graphene nanoribbons are investigated using first principles calculations. O-atoms on edges enhance edge reconstruction with strong C=C bonds that increase the binding energy ... -
Tunable high aspect ratio polymer nanostructures for cell interfaces
(Journal article; Peer reviewed, 2015)Nanoscale topographies and chemical patterns can be used as synthetic cell interfaces with a range of applications including study and control of cellular processes. Herein, we describe the fabrication of high aspect ratio ... -
Tunable superconducting critical temperature in ballistic hybrid structures with strong spin-orbit coupling
(Journal article; Peer reviewed, 2018)We present a theoretical description and numerical simulations of the superconducting transition in hybrid structures including strong spin-orbit interactions. The spin-orbit coupling is taken to be of Rashba type for ... -
Tunable supercurrent at the charge neutrality point via strained graphene junctions
(Journal article; Peer reviewed, 2011)We theoretically calculate the charge-supercurrent through a ballistic graphene junction where superconductivity is induced via the proximity-effect. Both monolayer and bilayer graphene are considered, including the ... -
Tuning and Tracking of Coherent Shear Waves in Molecular Films
(Journal article; Peer reviewed, 2018)in films as response to femtosecond and picosecond laser pulse heating by timeresolved X-ray diffraction. This method allows a direct absolute determination of the molecular displacements induced by electron−phonon interactions, ... -
Twinned-domain-induced magnonic modes in epitaxial LSMO/STO films
(Journal article; Peer reviewed, 2017)The use of periodic magnetic structures to control the magneto-dynamic properties of materials— magnonics—is a rapidly developing field. In the last decade, a number of studies have shown that metallic films can be patterned ... -
Two Dimensional Fiber Bundle Bridge Model
(Master thesis, 2016)The two dimensional fiber bundle bridge model is introduced, derived and studied for an uniform threshold distribution. The model is independent of history and has an adjustable effective range of interaction, which is ... -
Two-Component Spin-Orbit Coupled Ultracold Atoms in the Triangular Lattice - A Monte Carlo Study
(Master thesis, 2018)Teknologiske fremskritt i ultrakalde atom-eksperimenter har over de siste 20 årene økt interessen for fysisk intuitive Hamilton-funksjoner som kan brukes til å undersøke fundamentale vekselvirkninger i sterkt korrelerte ... -
Two-Component Spin-Orbit Coupled Ultracold Atoms in the Weak and Strong Coupling Regimes
(Master thesis, 2017)Motivated by recent experimental advances, we study two-component spin-orbit coupled ultracold bosonic atoms in two dimensions on a square optical lattice. Using a Bose-Hubbard model with spin-conserving and non-spin-conserving ... -
Two-dimensional altermagnets: Superconductivity in a minimal microscopic model
(Peer reviewed; Journal article, 2023)We propose a minimal toy model for a two-dimensional altermagnet. The model unravels altermagnetic properties at a microscopic level. We find spin-split electron and nondegenerate magnon bands with a d -wave symmetry. We ... -
Two-dimensional Simulations of Particle Deposition on a Cylinder in a Turbulent Cross Flow at Intermediate Reynolds Numbers
(Master thesis, 2011)The behaviour of particles in turbulent flow, with emphasis on particle deposition on both the frontside and backside of a cylinder, was investigated by means of Direct Numerical Simulations. One-way coupling between the ... -
Two-flavor chiral perturbation theory at finite isospin density beyond leading order
(Master thesis, 2020)I denne avhandlinga studerer me two-flavor QCD ved endeleg isospin kjemisk potensial ved å bruke kiral perturbasjonsteori forbi leiande orden i lågenergi ekspansjonen. Me reknar ut pionkondensatet og det kirale kondensatet ... -
Two-flavor chiral perturbation theory at nonzero isospin: Pion condensation at zero temperature
(Journal article; Peer reviewed, 2019)In this paper, we calculate the equation of state of two-flavor finite isospin chiral perturbation theory at next-to-leading order in the pion-condensed phase at zero temperature. We show that the transition from the vacuum ... -
Two-phase Flow in Porous Media: Simulations and Theory
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:2, Doctoral thesis, 2012) -
Tyrosine Side-Chain Functionalities at Distinct Positions Determine the Chirooptical Properties and Supramolecular Structures of Pentameric Oligothiophenes
(Peer reviewed; Journal article, 2020)Control over the photophysical properties and molecular organization of π-conjugated oligothiophenes is essential to their use in organic electronics. Herein we synthesized and characterized a variety of anionic pentameric ... -
An ultra-low field SQUID magnetometer for measuring antiferromagnetic and weakly remanent magnetic materials at low temperatures
(Journal article, 2023)A novel setup for measuring magnetic fields of antiferromagnets (i.e., quadrupolar or higher-order magnetic fields) and generally weakly remanent magnetic materials is presented. The setup features a highly sensitive ... -
Ultra-short pulsed Tm- and Er-doped all-fiber MOPA lasers and supercontinuum sources.
(Doctoral thesis, 2016-12-12)The present work describes the results of the development of a family of novel diode-pumped ultra-short and short pulsed Er- and Tm-fiber laser systems in the “eye-safe” near- and mid-Infrared (mid-IR) wavelength range for ... -
Ultrabroad Continuous-Wave Tuning of Ceramic Cr:ZnSe and Cr:ZnS Lasers
(Chapter, 2010)Using a single set of optics, we demonstrate ultrabroad tuning over more than 1300 nm from 1973 to 3349 nm in Cr:ZnSe and from 1962 to 3195 nm in Cr:ZnS at <10 GHz linewidth. -
Ultrafast control of spin interactions in honeycomb antiferromagnetic insulators
(Journal article; Peer reviewed, 2019)Light enables the ultrafast, direct, and nonthermal control of the exchange and Dzyaloshinskii-Moriya interactions. We consider two-dimensional honeycomb lattices described by the Kane-Mele-Hubbard model at half filling ... -
Ultrafast fiber-based lasers beyond 2 µm
(Chapter, 2017)The talk reviews recent advances in fiber based ultrafast mid-IR lasers and frequency combs, outlines the trends in materials as well as novel approaches for generation of ultra-broadband spectra above 2 mm.