Comment on: ''Radiation-Induced ''Zero-Resistance State'' and the Photon Assisted Transport''
Volkov, A. F.
Original · EN
Shi and Xie [8] predicted the N-shape current-voltage characteristic (CVC) for a 2DEG in a magnetic field where the zero-resistance state has been observed in recent experiments. However it is known that in the absence of a magnetic field the zero resistance state (zero differential resistance state) is achieved in a system with the S-shape CVC. The difference in the behaviour of systems with N- and S-shape CVC was studied more than three decades ago (see for example the review [9] and references therein) and is briefly explained in this Comment. At present it is not clear whether the N-shape CVC may lead to the zero resistance state in a 2DEG in a magnetic field.
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