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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

2020

Electronic, thermal, and optical properties of graphene like SiC structures: Significant effects of Si atom configurationsPhysics 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
Effects of bonded and non-bonded B/N codoping of graphene on its stability, interaction energy, electronic structure, and power factorPhysics Letters A
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

2019

Backaction effects in cavity-coupled quantum conductorsPhysical Review B
Cavity‐Photon‐Induced High‐Order Transitions between Ground States of Quantum DotsAnnalen der Physik
Thermoelectric Inversion in a Resonant Quantum Dot-Cavity System in the Steady-State RegimeNanomaterials
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
Generalized Master Equation Approach to
Time-Dependent Many-Body TransportEntropy
Manifestation of the Purcell Effect in Current Transport through a Dot–Cavity–QED SystemNanomaterials
Coexisting spin and Rabi oscillations at intermediate time regimes in electron transport through a photon cavityBeilstein Journal of Nanotechnology

2018

Magneto-optical quantum interferences in a system of spinor excitonsPhysica E-Low-Dimensional Systems & Nanostructures
Spin-dependent heat and thermoelectric currents in a Rashba ring coupled to a photon cavityPhysica E-Low-Dimensional Systems & Nanostructures
Radiated fields by polygonal core-shell nanowiresInternational Conference on Transparent Optical Networks
Effects of photon field on heat transport through a quantum wire attached to leadsPhysics Letters a
Electroluminescence Caused by the Transport of Interacting Electrons through Parallel Quantum Dots in a Photon CavityAnnalen Der Physik
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
Single-photon controlled thermospin transport in a resonant ring-cavity systemPhysica E-Low-Dimensional Systems & Nanostructures

2017

Time-dependent current into and through multilevel parallel quantum dots in a photon cavityPhysical Review B
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
Spin magneto-transport in a Rashba–Dresselhaus quantum channel with single and double finger gatesPhysics Letters A
Majorana states in prismatic core-shell nanowiresPhysical Review B
Controlled Coulomb effects in core-shell quantum ringsInternational Conference on Transparent Optical Networks
Transport signatures of top-gate bound states with strong Rashba-Zeeman effectPhysics Letters a
Efficient determination of the Markovian time-evolution towards a steady-state of a complex open quantum systemComputer Physics Communications

2016

Multi-domain electromagnetic absorption of triangular quantum ringsNanotechnology
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
Competition of static magnetic and dynamic photon forces in electronic transport through a quantum dotJournal of Physics-Condensed Matter
Conductance oscillations of core-shell nanowires in transversal magnetic fieldsPhysical Review B
Optical switching of electron transport in a waveguide-QED systemPhysica E-Low-Dimensional Systems & Nanostructures
Electronic states in core-shell quantum ringsInternational Conference on Transparent Optical Networks

2015

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
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

2014

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
Excitation of radial collective modes in a quantum dot: Beyond linear responseAnnalen Der Physik

2013

Magnetic-field-influenced nonequilibrium transport through a quantum ring with correlated electrons in a photon cavityPhysical Review B
Electron transport through a quantum dot assisted by cavity photonsJournal of Physics-Condensed Matter
Thermoelectric current and Coulomb-blockade plateaus in a quantum dotPhysica E-Low-Dimensional Systems & Nanostructures
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
Symmetric excitation and de-excitation of a cavity QED systemEuropean Physical Journal B

2012

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

2011

Time-dependent magnetotransport in semiconductor nanostructures via the generalized master equationComputer Physics Communications
Turnstile pumping through an open quantum wireNew Journal of Physics
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
Nonadiabatic generation of a pure spin current in a one-dimensional quantum ring with spin-orbit interactionPhysical Review B
Nonlinear interference in a mean-field quantum modelEuropean Physical Journal B

2010

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

2009

Time-dependent transport via the generalized master equation through a finite quantum wire with an embedded subsystemNew Journal of Physics
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
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

Time-dependent magnetotransport of a wave packet in a quantum wire with embedded quantum dotsPhysical Review B
Nonadiabatic transport in a quantum dot turnstilePhysical 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

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

2004

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

2003

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
Orbital magnetization of single and double quantum dots in a tight-binding modelPhysical Review B

2002

Inter-dot interaction in an array of elliptical quantum dotsPhysica E-Low-Dimensional Systems & Nanostructures
Characterization of Bernstein modes in quantum dotsEuropean Physical Journal B
Far-infrared spectroscopy of tailored quantum wires, quantum dots and antidot arraysPhysica E-Low-Dimensional Systems & Nanostructures
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
Excitations below the Kohn mode; FIR-absorption in quantum dotsPhysica Scripta

2001

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
Far-infrared excitations below the Kohn mode: Internal motion in a quantum dotPhysical Review B
Enhanced magnetization at integer quantum Hall statesPhysical Review B
Hartree-Fock dynamics in highly excited quantum dotsPhysical Review B
Nonlocality of the exchange interaction probed by scanning tunneling spectroscopyPhysical Review B

2000

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

1999

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

1998

Far-IR absorption of short-period quantum wires and the transition from one to two dimensionsPhysical Review 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
Electron-spin resonance in a quantum dotPhysical Review B
Far-infrared absorption of interaction-induced ground states of two weakly coupled quantum wiresPhysical Review B
Far-infrared-active collective modes of short-period arrays of quantum dots and antidotsPhysical Review B
Manifestation of the magnetic depopulation of one-dimensional subbands in the optical absorption of acoustic magnetoplasmons in side-gated quantum wiresPhysica B

1997

Magnetoplasmon mode in connected quantum-wire pairsPhysical Review B
Far-infrared absorption of acoustic and optical magnetoplasmons in double-layered quantum wiresPhysical Review B
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
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
Magneto-optics of arrays of quantum dots and antidotsAdvanced Workshop on Frontiers in Electronics, Proceedings, WOFE
Effects of compressible and incompressible states on the FIR-absorption of quantum wires and dots in a magnetic fieldPhysica Scripta T
The far-infrared absorption of a periodic 2DEG in the transition regime between weak and strong modulationPhysica E

1996

Manifestation of the Hofstadter butterfly in far-infrared absorptionPhysical Review B
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
The evolution of Bernstein modes in quantum wires with increasing deviation from parabolic confinementJournal of Physics-Condensed Matter
The Hofstadter energy spectrum for an interacting 2DEGSurface Science
Manifestation of the Hofstadter butterfly in far-infrared absorptionPhysical Review B

1995

Effects of screening on the Hofstadter butterflyPhysical 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
BERNSTEIN MODES IN QUANTUM WIRES AND DOTSPhysical Review B

1994

FAR-INFRARED RESPONSE OF QUANTUM DOTS - FROM FEW ELECTRON EXCITATIONS TO MAGNETOPLASMONSSolid-State Electronics
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

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

DIELECTRIC RESPONSE OF A TWO-DIMENSIONAL ELECTRON-GAS IN A QUANTIZING MAGNETIC-FIELDSolid State Communications
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

1987

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

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

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