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Rectification of AC Electric Current at the Edge of 2D Electron Gas
Author(s) -
Durnev Mikhail V.,
Tarasenko Sergey A.
Publication year - 2021
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202000291
Subject(s) - electric field , excitation , rectification , electron , current (fluid) , physics , magnetic field , point reflection , electric current , cyclotron resonance , atomic physics , electron scattering , condensed matter physics , cyclotron , voltage , quantum mechanics , thermodynamics
Driving a 2D electron gas by AC electric field leads to a DC electric current flowing along the edge of the system. The effect is caused by the local breaking of space inversion symmetry at the edge. The current is generated in a narrow stripe determined by the screening length of the AC electric field and the mean free path of carriers. The developed microscopic theory of the effect shows that the excitation spectrum of the edge current and even the current direction depend on the mechanism of electron scattering. In an external magnetic field, the excitation spectrum of the current features the cyclotron resonance.