Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2009

Magnetic-field antisymmetry of photovoltaic voltage in evanescent microwave fields as seen in a semiconductor Hall bar

F. Pierre
  • Fonction : Auteur
A. Cavanna
  • Fonction : Auteur
B. Etienne
  • Fonction : Auteur

Résumé

A two-dimensional electron system without spatial inversion symmetry develops a sample specific dc voltage when exposed to a microwave radiation at low temperature. We investigate this photovoltaic (PV) effect in the case where spatial symmetry is broken by an evanescent high-frequency potential. We measure the induced PV voltage in a GaAs/ Ga1-x Alx As Hall bar at magnetic fields in the tesla range. We find that in this regime the induced PV voltage is antisymmetric with magnetic field and exhibits regular Shubnikov-de Haas-type oscillations. Our experimental results can be understood from a simple model, which describes the effect of stationary orbital currents caused by microwave driving.

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Dates et versions

hal-04896726 , version 1 (20-01-2025)

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Citer

A. Chepelianskii, S. Guéron, F. Pierre, A. Cavanna, B. Etienne, et al.. Magnetic-field antisymmetry of photovoltaic voltage in evanescent microwave fields as seen in a semiconductor Hall bar. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2009, 79 (19), ⟨10.1103/PhysRevB.79.195309⟩. ⟨hal-04896726⟩
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