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VOLUME 58 (1993) | ISSUE 8 | PAGE 668
Scattering by an isolated impurity in a quantum channel in a magnetic field
The conductance of a ballistic quantum channel with a constriction in a quantizing magnetic field is analyzed in the case of scattering by an isolated impurity in the channel. The transmission coefficient and the conductance are derived for this microstructure. The parameters of a Breit-Wigner resonance and oscillations in the transmission coefficient are analyzed.