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Viðar Guðmundsson - Prófessor

Viðar Guðmundsson

–

Verkfræði- og náttúruvísindasvið

Viðar Guðmundsson

Prófessor

Aðsetur
VR-3 / V03-207
Sími
5254695 8640588
Tölvupóstur
vidar [hjá] hi.is

Starfseining
Raunvísindadeild
Vefsíða
https://notendur.hi.is/vidar/
Ritaskrá
Viðar Guðmundsson - ritaskrá

Ferilskrá
Viðar Guðmundsson - ferilskrá
ORCID vefsíða
https://orcid.org/0000-0001-8939-3522

Útgefið efni

2021

Spin-polarised DFT modeling of electronic, magnetic, thermal and optical properties of silicene doped with transition metalsPhysica E: Low-dimensional Systems and Nanostructures

2020

Interlayer interaction controlling the properties of AB- and AA-stacked bilayer graphene-like BC14N and Si2C14Surfaces and Interfaces
Properties of BSi6N monolayers derived by first-principle computationPhysica E: Low-dimensional Systems and Nanostructures
Oscillations in electron transport caused by multiple resonances in a quantum dot-QED system in the steady-state regimePhysica E: Low-dimensional Systems and Nanostructures
Modeling electronic, mechanical, optical and thermal properties of graphene-like BC6N materials: Role of prominent BN-bondsPhysics Letters A
The interplay of electron–photon and cavity-environment coupling on the electron transport through a quantum dot systemPhysica E: Low-dimensional Systems and Nanostructures
Topological Phases Beyond the Hofstadter ButterflyPhysics
Electronic, thermal, and optical properties of graphene like SiC structures: Significant effects of Si atom configurationsPhysics Letters A
Effects of bonded and non-bonded B/N codoping of graphene on its stability, interaction energy, electronic structure, and power factorPhysics Letters A
Self-induction and magnetic effects in electron transport through a photon cavityPhysica E: Low-dimensional Systems and Nanostructures

2019

Manifestation of the Purcell Effect in Current Transport through a Dot–Cavity–QED SystemNanomaterials
Silicon on a graphene nanosheet with triangle- and dot-shape: Electronic structure, specific heat, and thermal conductivity from first-principle calculationsResults in Physics
The photocurrent generated by photon replica states of an off-resonantly coupled dot-cavity systemScientific Reports
Thermoelectric Inversion in a Resonant Quantum Dot-Cavity System in the Steady-State RegimeNanomaterials
Coexisting spin and Rabi oscillations at intermediate time regimes in electron transport through a photon cavityBeilstein Journal of Nanotechnology
Backaction effects in cavity-coupled quantum conductorsPhysical Review B
Cavity‐Photon‐Induced High‐Order Transitions between Ground States of Quantum DotsAnnalen der Physik
Generalized Master Equation Approach to
Time-Dependent Many-Body TransportEntropy

2018

Radiated fields by polygonal core-shell nanowiresInternational Conference on Transparent Optical Networks
Single-photon controlled thermospin transport in a resonant ring-cavity systemPhysica E-Low-Dimensional Systems & Nanostructures
Electroluminescence Caused by the Transport of Interacting Electrons through Parallel Quantum Dots in a Photon CavityAnnalen Der Physik
Magneto-optical quantum interferences in a system of spinor excitonsPhysica E-Low-Dimensional Systems & Nanostructures
Excitons in core-shell nanowires with polygonal cross sections.Nano letters
Photon-induced tunability of the thermospin current in a Rashba ring.Journal of physics. Condensed matter : an Institute of Physics journal
Current correlations for the transport of interacting electrons through parallel quantum dots in a photon cavityPhysics Letters a
Conductance features of core-shell nanowires determined by their internal geometryPhysical Review B
Effects of photon field on heat transport through a quantum wire attached to leadsPhysics Letters a
Spin-dependent heat and thermoelectric currents in a Rashba ring coupled to a photon cavityPhysica E-Low-Dimensional Systems & Nanostructures

2017

Efficient determination of the Markovian time-evolution towards a steady-state of a complex open quantum systemComputer Physics Communications
Transport signatures of top-gate bound states with strong Rashba-Zeeman effectPhysics Letters a
In-gap corner states in core-shell polygonal quantum ringsScientific Reports
Regimes of radiative and nonradiative transitions in transport through an electronic system in a photon cavity reaching a steady stateAnnalen der Physik
Controlled Coulomb effects in core-shell quantum ringsInternational Conference on Transparent Optical Networks
Majorana states in prismatic core-shell nanowiresPhysical Review B
Spin magneto-transport in a Rashba–Dresselhaus quantum channel with single and double finger gatesPhysics Letters A
Time-dependent current into and through multilevel parallel quantum dots in a photon cavityPhysical Review B

2016

Competition of static magnetic and dynamic photon forces in electronic transport through a quantum dotJournal of Physics-Condensed Matter
Electronic states in core-shell quantum ringsInternational Conference on Transparent Optical Networks
Cavity-photon contribution to the effective interaction of electrons in parallel quantum dotsAnnalen Der Physik
Cavity-Photon Controlled Thermoelectric Transport through a Quantum WireAcs Photonics
Conductance oscillations of core-shell nanowires in transversal magnetic fieldsPhysical Review B
Multi-domain electromagnetic absorption of triangular quantum ringsNanotechnology
Optical switching of electron transport in a waveguide-QED systemPhysica E-Low-Dimensional Systems & Nanostructures

2015

Double-finger-gate controlled spin-resolved resonant quantum transport in the presence of a Rashba-Zeeman gapJournal of Physics-Condensed Matter
Electron localization and optical absorption of polygonal quantum ringsPhysical Review B
Excitation spectra of a quantum ring embedded in a photon cavityJournal of Optics
Signature of Snaking States in the Conductance of Core-Shell NanowiresNano Letters
Symmetry dependent electron localization and optical absorption of polygonal quantum ringsInternational Conference on Transparent Optical Networks
Coherent transient transport of interacting electrons through a quantum waveguide switchJournal of Physics-Condensed Matter
Coupled Collective and Rabi Oscillations Triggered by Electron Transport through a Photon CavityAcs Photonics

2014

Excitation of radial collective modes in a quantum dot: Beyond linear responseAnnalen Der Physik
Impact of a circularly polarized cavity photon field on the charge and spin flow through an Aharonov-Casher ringPhysica E-Low-Dimensional Systems & Nanostructures
Spin and impurity effects on flux-periodic oscillations in core-shell nanowiresPhysical Review B
Coherent nonlinear quantum model for composite fermionsPhysics Letters a
Cavity-photon-switched coherent transient transport in a double quantum waveguideJournal of Applied Physics
Effects of geometry and linearly polarized cavity photons on charge and spin currents in a quantum ring with spin-orbit interactionsEuropean Physical Journal B
Delocalization of electrons by cavity photons in transport through a quantum dot moleculePhysica E-Low-Dimensional Systems & Nanostructures

2013

Electron transport through a quantum dot assisted by cavity photonsJournal of Physics-Condensed Matter
Magnetic-field-influenced nonequilibrium transport through a quantum ring with correlated electrons in a photon cavityPhysical Review B
Snaking states on a cylindrical surface in a perpendicular magnetic fieldEuropean Physical Journal B
Stepwise introduction of model complexity in a generalized master equation approach to time-dependent transportFortschritte Der Physik-Progress of Physics
Thermoelectric current and Coulomb-blockade plateaus in a quantum dotPhysica E-Low-Dimensional Systems & Nanostructures
Symmetric excitation and de-excitation of a cavity QED systemEuropean Physical Journal B

2012

Quantum magneto-electrodynamics of electrons embedded in a photon cavityNew Journal of Physics
Time-dependent transport of electrons through a photon cavityPhysical Review B
Nonadiabatic generation of spin currents in a quantum ring with Rashba and Dresselhaus spin-orbit interactionsAdvanced Many-Body and Statistical Methods in Mesoscopic Systems
Nonlinear Schrodinger-Poisson theory for quantum-dot HeliumPhysica D-Nonlinear Phenomena
Nonperturbative approach to circuit quantum electrodynamicsPhysical Review E
Reduction of ballistic spin scattering in a spin-FET using stray electric fieldsAdvanced Many-Body and Statistical Methods in Mesoscopic Systems
Generalized Master equation approach to mesoscopic time-dependent transportAdvanced Many-Body and Statistical Methods in Mesoscopic Systems
Excitation of collective modes in a quantum flutePhysical Review B
Persistent oscillatory currents in a 1D ring with Rashba and Dresselhaus spin-orbit interactions excited by a terahertz pulsePhysica E-Low-Dimensional Systems & Nanostructures

2011

Nonlinear interference in a mean-field quantum modelEuropean Physical Journal B
Nonadiabatic generation of a pure spin current in a one-dimensional quantum ring with spin-orbit interactionPhysical Review B
Turnstile pumping through an open quantum wireNew Journal of Physics
Time-dependent magnetotransport in semiconductor nanostructures via the generalized master equationComputer Physics Communications
Electronic charge and spin density distribution in a quantum ring with spin-orbit and Coulomb interactionsPhysical Review B
Magnetotransport in a time-modulated double quantum point contact systemComputer Physics Communications

2010

Time-dependent magnetotransport in an interacting double quantum wire with window couplingPhysical Review B
Dynamic correlations induced by Coulomb interactions in coupled quantum dotsPhysical Review B
Coulomb interaction and transient charging of excited states in open nanosystemsPhysical Review B
Correlated time-dependent transport through a two-dimensional quantum structurePhysical Review B

2009

Coherent magnetotransport and time-dependent transport through split-gated quantum constrictionsPhysical Review B
Geometrical effects and signal delay in time-dependent transport at the nanoscaleNew Journal of Physics
Time-dependent transport via the generalized master equation through a finite quantum wire with an embedded subsystemNew Journal of Physics
Theoretical investigation of modulated currents in open nanostructuresPhysical Review B

2008

Coherent switching by detuning a side-coupled quantum-dot systemPhysical Review B
Transient magnetotransport through a quantum wirePhysical Review B

2007

Nonadiabatic transport in a quantum dot turnstilePhysical Review B
Time-dependent magnetotransport of a wave packet in a quantum wire with embedded quantum dotsPhysical Review B
Transient regime in nonlinear transport through many-level quantum dotsPhysical Review B

2006

Coherent magnetotransport spectroscopy in an edge-blocked double quantum wire with window and resonator couplingPhysical Review B
Magnetotransport in a double quantum wire: Modeling using a scattering formalism built on the Lippmann-Schwinger equationPhysical Review B

2005

Fano regime of one-dot Aharonov-Bohm interferometersPhysical Review B
Net current generation in a 1D quantum ring at zero magnetic fieldPhysica E-Low-Dimensional Systems & Nanostructures
Transport through a quantum ring, dot, and barrier embedded in a nanowire in magnetic fieldPhysical Review B
Tuning of coupling modes in laterally parallel double open quantum dotsPhysical Review B
Bound state with negative binding energy induced by coherent transport in a two-dimensional quantum wirePhysical Review B
Multi-mode transport through a quantum nanowire with two embedded dotsEuropean Physical Journal B

2004

Coherent electronic transport in a multimode quantum channel with Gaussian-type scatterersPhysical Review B
Non-adiabatic current excitation in quantum ringsPhysica Scripta

2003

Orbital magnetization of single and double quantum dots in a tight-binding modelPhysical Review B
Nonadiabatic current generation in a finite width semiconductor ringPhysical Review B
Impurity and spin effects on the magneto-spectroscopy of a THz-modulated nanostructurePhysical Review B

2002

Far-infrared spectroscopy of tailored quantum wires, quantum dots and antidot arraysPhysica E-Low-Dimensional Systems & Nanostructures
Excitations below the Kohn mode; FIR-absorption in quantum dotsPhysica Scripta
Characterization of Bernstein modes in quantum dotsEuropean Physical Journal B
Influence of potential fluctuations on Landau quantization and spin splitting studied by low temperature scanning tunneling spectroscopy on InAs(110)Journal of Vacuum Science & Technology B
Inter-dot interaction in an array of elliptical quantum dotsPhysica E-Low-Dimensional Systems & Nanostructures

2001

Hartree-Fock dynamics in highly excited quantum dotsPhysical Review B
Far-infrared excitations below the Kohn mode: Internal motion in a quantum dotPhysical Review B
Erratum: Origin of landau oscillations observed in scanning tunneling spectroscopy on n-InAs(110) ( Physical Review B (2000) 62 (7257))Physical Review B - Condensed Matter and Materials Physics
Nonlocality of the exchange interaction probed by scanning tunneling spectroscopyPhysical Review B
Far-infrared excitations below the Kohn mode: Internal motion in a quantum dotPhysical Review B
Enhanced magnetization at integer quantum Hall statesPhysical Review B

2000

Magnetization of noncircular quantum dotsPhysical Review B
Origin of Landau oscillations observed in scanning tunneling spectroscopy on n-InAs(110)Physical Review B
Finite-size effects in the magnetization of periodic mesoscopic systemsPhysica E
Hysteresis effect due to the exchange Coulomb interaction in short-period superlattices in tilted magnetic fieldsPhysical Review B
Low temperature scanning tunneling spectroscopy on InAs(110)Journal of Electron Spectroscopy and Related Phenomena
Magnetization in short-period mesoscopic electron systemsPhysical Review B

1999

Memorization of short-range potential fluctuations in Landau levelsPhysical Review B
Influence of the shape of quantum dots on their far-infrared absorptionPhysical Review B
Spectroscopy of few-electron quantum dotsActa Physica Polonica A

1998

Electron-spin resonance in a quantum dotPhysical Review B
Far-infrared-active collective modes of short-period arrays of quantum dots and antidotsPhysical Review B
Far-IR absorption of short-period quantum wires and the transition from one to two dimensionsPhysical Review B
Manifestation of the magnetic depopulation of one-dimensional subbands in the optical absorption of acoustic magnetoplasmons in side-gated quantum wiresPhysica B
Collective intersubband spin-density excitations in a quantum wire in a magnetic fieldJournal of Physics-Condensed Matter
Collective modes and the far-infrared absorption of the two-dimensional electron gas in a periodic quantizing magnetic fieldSuperlattices and Microstructures
Far-infrared absorption of interaction-induced ground states of two weakly coupled quantum wiresPhysical Review B

1997

Far-infrared spectroscopy of quantum wires and dots, breaking Kohn's theoremPhysica E
Spin-density and charge-density excitations in quantum wiresPhysical Review B
The effects of compressible and incompressible states on the FIR-absorption of quantum wires and dots in a magnetic fieldPhysica Scripta
Magnetoplasmon mode in connected quantum-wire pairsPhysical Review B
The far-infrared absorption of a periodic 2DEG in the transition regime between weak and strong modulationPhysica E
Far-infrared spectroscopy of quantum wires and dots, breaking Kohn's theoremPhysica E
Magnetoplasmon mode in connected quantum-wire pairsPhysical Review B
The far-infrared absorption of a periodic 2DEG in the transition regime between weak and strong modulationPhysica E
Far-infrared absorption of acoustic and optical magnetoplasmons in double-layered quantum wiresPhysical Review B
Effects of compressible and incompressible states on the FIR-absorption of quantum wires and dots in a magnetic fieldPhysica Scripta T
Magneto-optics of arrays of quantum dots and antidotsAdvanced Workshop on Frontiers in Electronics, Proceedings, WOFE

1996

Detection of compressible and incompressible states in quantum dots and antidots by far-infrared spectroscopy - ReplyPhysical Review Letters
Collective excitations in realistic quantum wiresJournal of Physics-Condensed Matter
Detection of compressible and incompressible states in quantum dots and antidots by far-infrared spectroscopyPhysical Review Letters
Hofstadter-type energy spectra in lateral superlattices defined by periodic magnetic and electrostatic fieldsPhysical Review B
Manifestation of the Hofstadter butterfly in far-infrared absorptionPhysical Review B
Manifestation of the Hofstadter butterfly in far-infrared absorptionPhysical Review B
The Hofstadter energy spectrum for an interacting 2DEGSurface Science
The evolution of Bernstein modes in quantum wires with increasing deviation from parabolic confinementJournal of Physics-Condensed Matter

1995

BERNSTEIN MODES IN QUANTUM WIRES AND DOTSPhysical Review B
SPIN EFFECTS IN A CONFINED 2-DIMENSIONAL ELECTRON-GAS - ENHANCEMENT OF THE G-FACTOR, SPIN-INVERSION STATES, AND THEIR FAR-INFRARED ABSORPTIONPhysical Review B
Effects of screening on the Hofstadter butterflyPhysical Review B

1994

FAR-INFRARED ABSORPTION OF A CONFINED 2-DIMENSIONAL ELECTRON-GAS WITH AN IMBEDDED COULOMB IMPURITYPhysical Review B
SCREENING OF AN IMPURITY IN A 2-DIMENSIONAL ELECTRON-GAS WITHIN THE HARTREE AND THE HARTREE-FOCK APPROXIMATION IN THE QUANTUM HALL REGIMEPhysical Review B
FAR-INFRARED RESPONSE OF QUANTUM DOTS - FROM FEW ELECTRON EXCITATIONS TO MAGNETOPLASMONSSolid-State Electronics

1993

COMPARISON OF A HARTREE, A HARTREE-FOCK, AND AN EXACT TREATMENT OF QUANTUM-DOT HELIUMPhysical Review B
THEORY OF QUANTUM-DOT HELIUMPhysica B

1991

SELF-CONSISTENT MODEL OF MAGNETOPLASMONS IN QUANTUM DOTS WITH NEARLY PARABOLIC CONFINEMENT POTENTIALSPhysical Review B

1990

OSCILLATING IMPURITY SPECTRA CAUSED BY NONLINEAR SCREENING IN THE QUANTUM HALL REGIMESolid State Communications

1989

SCREENING OF IMPURITIES IN THE QUANTUM HALL REGIMESpectroscopy of Semiconductor Microstructures

1988

SCREENING PROPERTIES OF THE TWO-DIMENSIONAL ELECTRON-GAS IN THE QUANTUM HALL REGIMEPhysical Review B
MAGNETIC-FIELD EFFECTS IN A CONFINED TWO-DIMENSIONAL ELECTRON-GAS - A COMPARISON BETWEEN CONTINUUM AND LATTICE MODELZeitschrift Fur Physik B-Condensed Matter
INTERPRETATION OF ACTIVATED RESISTIVITY IN THE QUANTUM HALL REGIME BY A STATISTICAL-MODEL OF INHOMOGENEITIESPhysical Review B
DIELECTRIC RESPONSE OF A TWO-DIMENSIONAL ELECTRON-GAS IN A QUANTIZING MAGNETIC-FIELDSolid State Communications

1987

MAGNETIC-FIELD DEPENDENCE OF GATE VOLTAGE AND CURRENT IN A GAAS-HETEROSTRUCTURE IN THE QUANTUM HALL REGIMESolid State Communications
INTERPRETATION OF EXPERIMENTS IMPLYING DENSITY OF STATES BETWEEN LANDAU-LEVELS OF A TWO-DIMENSIONAL ELECTRON-GAS BY A STATISTICAL-MODEL FOR INHOMOGENEITIESPhysical Review B

1986

STATISTICAL-MODEL FOR INHOMOGENEITIES IN A TWO-DIMENSIONAL ELECTRON-GAS IMPLYING A BACKGROUND DENSITY OF STATES BETWEEN LANDAU-LEVELSPhysical Review B
REMARKS ON LAUGHLIN WAVE-FUNCTION FOR ANOMALOUS QUANTIZED HALL-EFFECTSPhysics Letters A

1985

THE F-SUM RULE AND TAO-THOULESS THEORY FOR THE ANOMALOUS QUANTIZED HALL-EFFECTSPhysics Letters A
A MICROSCOPIC THEORY OF THE QUANTIZED HALL-EFFECTSPhysica A

1984

THE PLATEAU WIDTHS OF THE QUANTIZED HALL CONDUCTANCEPhysics Letters A
THE GENERALIZED DIELECTRIC FUNCTION OF THE TAO-THOULESS SUPERLATTICE MODEL FOR THE ANOMALOUS QUANTIZED HALL-EFFECTSPhysics Letters A
RETARDED TRANSVERSE CURRENT-CURRENT RESPONSE FUNCTIONS OF A TWO-DIMENSIONAL ELECTRON-GASPhysica A
TRANSVERSE PLASMON IN TWO-DIMENSIONAL ELECTRONSPhysics Letters A

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