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VOLUME 61 (1995) | ISSUE 3 | PAGE 222
Current-voltage characteristic of a magnetized 2D electron channel with an approximately integer filling factor
A method is proposed for calculating the current-voltage characteristic of a 2D electron channel in a high magnetic field at approximately integer values of the filling factor. In this method, most of the Hall current is of edge origin. The bulk component, exponentially small in the linear regime, begins to grow rapidly above a threshold, while the total Hall current increases gradually. At low temperatures this abrupt process corresponds to breakdown of the quantum Hall effect. © 1995 American Institute of Physics.