Quantum Pumping and Quantized Magnetoresistance in a Hall Bar

Details Quantum Pumping and Quantized Magnetoresistance in a Hall Bar Quantum Pumping and Quantized Magnetoresistance in a Hall Bar

2003-09-22

arxiv.org/abs/cond-mat/0309496v1

Phys. Rev. B 68, 205316 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

RevTeX, 3 figures

Scientific paper

10.1103/PhysRevB.68.205316

We show how a dc current can be generated in a Hall bar without applying a bias voltage. The Hall resistance $R_H$ that corresponds to this pumped current is quantized, just as in the usual integer quantum Hall effect (IQHE). In contrast with the IQHE, however, the longitudinal resistance $R_{xx}$ does not vanish on the plateaus, but equals the Hall resistance. We propose an experimental geometry to measure the pumped current and verify the predicted behavior of $R_H$ and $R_{xx}$.

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