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The low-frequency instability of a magnetized plasma column and the anomalous radial plasma convection are shown to be linked with the existence of a radial cross-field current along a plasma channel rotating around the central magnetized…

Plasma Physics · Physics 2010-11-10 S. Jaeger , Th. Pierre

Plasma properties inside a hydrogen-filled capillary discharge waveguide were modeled with dissipative magnetohydrodynamic simulations to enable analysis of capillaries of circular and square cross-sections implying that square capillaries…

We present a high quality two-dimensional cavity structure based on ZnO nanowires coated with concentrical Bragg reflectors. The spatial mode distribution leads to the simultaneous appearance of the weak and strong coupling regime even at…

Mesoscale and Nanoscale Physics · Physics 2017-08-23 Tom Michalsky , Helena Franke , Robert Buschlinger , Ulf Peschel , Marius Grundmann , Rüdiger Schmidt-Grund

Light-induced energy confinement in nanoclusters via plasmon excitations influences applications in nanophotonics, photocatalysis, and the design of controlled slow electron sources. The resonant decay of these excitations through the…

Atomic and Molecular Clusters · Physics 2023-06-21 Rasheed Shaik , Hari R. Varma , Mohamed El-Amine Madjet , Fulu Zheng , Thomas Frauenheim , Himadri S. Chakraborty

Phase Resolved Optical Emission Spectroscopy (PROES) measurements combined with 1d3v Particle-in-Cell/Monte Carlo Collisions (PIC/MCC) simulations are used to study the electron power absorption and excitation/ionization dynamics in…

Plasma Physics · Physics 2022-09-28 A. Derzsi , P. Hartmann , M. Vass , B. Horváth , M. Gyulai , I. Korolov , J. Schulze , Z. Donkó

We consider charge transport through a nanoscopic object, e.g. single molecules, short nanotubes, or quantum dots, that is weakly coupled to metallic electrodes. We account for several levels of the molecule/quantum dot with level-dependent…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. Thielmann , M. H. Hettler , J. König , G. Schön

As highly tunable interacting systems, cold atoms in optical lattices are ideal to realize and observe negative absolute temperatures, T < 0. We show theoretically that by reversing the confining potential, stable superfluid condensates at…

Quantum Gases · Physics 2010-11-29 Akos Rapp , Stephan Mandt , Achim Rosch

The sheath formation in a weakly magnetized collisionless electronegative plasma consisting of electrons, negative and positive ions has been numerically investigated using the hydrodynamic equations. The electrons and negative ions are…

Plasma Physics · Physics 2020-06-25 R. Paul , S. Adhikari , R. Moulick , S. S. Kausik , B. K. Saikia

We study the cooling of a dielectric nanoscale particle trapped in an optical cavity. We derive the frictional force for motion in the cavity field, and show that the cooling rate is proportional to the square of oscillation amplitude and…

Optics · Physics 2013-05-29 P. F. Barker , M. N. Shneider

The self-energies and the spectral densities of longitudinal and transverse gluons at zero temperature in the color-flavor-locked (CFL) phase are calculated. There appears a collective excitation, a light plasmon, at energies smaller than…

High Energy Physics - Phenomenology · Physics 2008-11-26 H. Malekzadeh , Dirk H. Rischke

We propose a simple model of a nanoswitch as a memory resistor. The resistance of the nanoswitch is determined by electron tunneling through a nanoparticle diffusing around one or more potential minima located between the electrodes in the…

Mesoscale and Nanoscale Physics · Physics 2013-04-17 Sergey E. Savel'ev , Fabio Marchesoni , Alexander M. Bratkovsky

The microwave response of high quality niobium films in a perpendicular static magnetic field has been investigated. The complex frequency shift was measured up to the upper critical fields. The data have been analyzed by the effective…

Superconductivity · Physics 2007-05-23 D. Janjusevic , M. S. Grbic , M. Pozek , A. Dulcic , D. Paar , B. Nebendahl , T. Wagner

We study low energy quantum oscillations of electron gas in plasma. It is shown that two electrons participating in these oscillations acquire additional negative energy when they interact by means of a virtual plasmon. The additional…

Plasma Physics · Physics 2009-02-27 Maxim Dvornikov

We study the loss of coherence of electrochemical oscillations on meso- and nanosized electrodes with numeric simulations of the electrochemical master equation for a prototypical electrochemical oscillator, the hydrogen peroxide reduction…

Adaptation and Self-Organizing Systems · Physics 2017-06-29 Filippo G. Cosi , Katharina Krischer

The behavior of nuclear matter is studied at low densities and temperatures using classical molecular dynamics with three different sets of potentials with different compressibility. Nuclear matter is found to arrange in crystalline…

Nuclear Theory · Physics 2013-05-13 C. O. Dorso , P. A. Giménez Molinelli , J. I. Nichols , J. A. López

In this paper we present a concise overview of our recent results concerning the electric potential distribution around a small charged particle in weakly ionized plasmas. A number of different effects which influence plasma screening…

Plasma Physics · Physics 2015-05-20 Manis Chaudhuri , Sergey A. Khrapak , Roman Kompaneets , Gregor E. Morfill

We measure the near-resonant transmission of light through a dense medium of potassium vapor confined in a cell with nanometer thickness in order to investigate the origin and validity of the collective Lamb-shift. A complete model…

We report measurements of the non-equilibrium electron energy distribution in carbon nanotubes. Using tunneling spectroscopy via a superconducting probe, we study the shape of the local electron distribution functions, and hence energy…

Mesoscale and Nanoscale Physics · Physics 2010-08-03 Yung-Fu Chen , Travis Dirks , Gassem Al-Zoubi , Norman Birge , Nadya Mason

Superconductivity was originally observed in 3D metals caused by an effective attraction between electrons mediated by the electron-phonon interaction. Since then there has been a lot of work on 2D conductors including the possibility of…

Mesoscale and Nanoscale Physics · Physics 2022-01-19 Supriyo Datta

Recently, Barger {\em et al.} computed energy losses into Kaluza Klein modes from astrophysical plasmas in the approximation of zero density for the plasmas. We extend their work by considering the effects of finite density for two plasmon…

High Energy Physics - Phenomenology · Physics 2009-10-31 Duane A. Dicus , Wayne W. Repko , Vigdor L. Teplitz