منابع مشابه
Local symmetries and order-disorder transitions in small macroscopic Wigner islands.
The influence of local order on the disordering scenario of small Wigner islands is discussed. A first disordering step is put in evidence by the time correlation functions and is linked to individual excitations resulting in configuration transitions, which are very sensitive to the local symmetries. This is followed by two other transitions, corresponding to orthoradial and radial diffusion, ...
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Experiments in magnetically confined, high temperature plasmas heated by intense electromagnetic waves at the electron-cyclotron-resonance frequency have revealed peculiar and hitherto unexplained plasma behavior. The most striking results [1] come from the Rijnhuizen Tokamak Project (RTP), where electron cyclotron heating (ECH) with maximum power P ø 360 kW is applied to the toroidal plasma. I...
متن کاملExchange frequencies in the 2D Wigner crystal.
Using path integral Monte Carlo we have calculated exchange frequencies as electrons undergo ring exchanges in a "clean" 2D Wigner crystal as a function of density. The results show agreement with WKB calculations at very low density, but show a more rapid increase with density near melting. Remarkably, the exchange Hamiltonian closely resembles the measured exchanges in 2D (3)He. Using the res...
متن کاملSemi-Discrete 2D Wigner-Particle Approach
SEMI-DISCRETE FORMULATION The Wigner function (WF) approach to device simulations is regarded as convenient, as it maintains many classical concepts describing evolution and dissipation processes, as well as discouraging, due to many open numerical and theoretical issues: The approach has been applied to merely 1D problems, an increase of the dimensions has been considered impossible for comput...
متن کاملWigner crystallization in mesoscopic 2d electron systems.
Wigner crystallization of electrons in 2D quantum dots is reported. It proceeds in two stages: (i) via radial ordering of electrons on shells and (ii) freezing of the intershell rotation. The phase boundary of the crystal is computed in the whole temperature-density plane, and the influences of quantum effects and the particle number are analyzed.
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ژورنال
عنوان ژورنال: Europhysics Letters (EPL)
سال: 2001
ISSN: 0295-5075,1286-4854
DOI: 10.1209/epl/i2001-00379-x