Courant de surface pour l'effet Hall
| Autor: | M. Creff, F. Faisant, Jean-Eric Wegrowe, J. M. Rubi |
|---|---|
| Přispěvatelé: | Laboratoire des Solides Irradiés (LSI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), University of Barcelona, Departament de Fisica Fonamental (DFF), Universitat de Barcelona (UB)-Facultat de Fisica - Universitat de Barcelona |
| Rok vydání: | 2019 |
| Předmět: |
Electric fields
Efecte Hall Transferència de càrrega General Physics and Astronomy FOS: Physical sciences 02 engineering and technology 01 natural sciences Electric charge Charge transfer Hall effect 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Boundary value problem [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] Camps elèctrics [PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall] Leakage (electronics) 010302 applied physics Physics [PHYS]Physics [physics] Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Ocean current 021001 nanoscience & nanotechnology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Magnetic field 0210 nano-technology Stationary state |
| Zdroj: | Dipòsit Digital de la UB Universidad de Barcelona Journal of Applied Physics Journal of Applied Physics, American Institute of Physics, 2020, 128, ⟨10.1063/5.0013182⟩ Journal of Applied Physics, 2020, 128, ⟨10.1063/5.0013182⟩ |
| ISSN: | 0021-8979 1089-7550 |
| DOI: | 10.48550/arxiv.1908.06282 |
| Popis: | A variational approach is used in order to study the stationary states of Hall devices. Charge accumulation, electric potentials and electric currents are investigated on the basis of the Kirchhoff-Helmholtz principle of least heat dissipation. A simple expression for the state of minimum power dissipated -- that corresponds to zero transverse current and harmonic chemical potential -- is derived. It is shown that a longitudinal surface current proportional to the charge accumulation is flowing near the edges of the device. Charge accumulation and surface currents define a boundary layer over a distance of the order of the Debye-Fermi length. Comment: 9 pages, 2 figures |
| Databáze: | OpenAIRE |
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