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19 April 2024 |
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Lateral tunneling through the controlled barrier between edge channels in a two-dimentional electron system | | A.A. Shashkin
; V.T. Dolgopolov
; E.V. Deviatov
; B. Irmer
; A.G.C. Haubrich
; J.P.Kotthaus
; M. Bichler
; W. Wegscheider
; | | Date: |
12 May 1999 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Affiliation: | Institute of Solid State Physics, Chernogolovka, Moscow District, Russia), B. Irmer, A.G.C. Haubrich, J.P.Kotthaus (Ludwig-Maximilians-Universität, München, Germany), M. Bichler, W. Wegscheider (Walter Schottky Institut, Technische Universit | | Abstract: | We study the lateral tunneling through the gate-voltage-controlled barrier, which arises as a result of partial elimination of the donor layer of a heterostructure along a fine strip using an atomic force microscope, between edge channels at the depletion-induced edges of a gated two-dimensional electron system. For a sufficiently high barrier a typical current-voltage characteristic is found to be strongly asymmetric and include, apart from a positive tunneling branch, the negative branch that corresponds to the current overflowing the barrier. We establish the barrier height depends linearly on both gate voltage and magnetic field and we describe the data in terms of electron tunneling between the outermost edge channels. | | Source: | arXiv, cond-mat/9905153 | | Services: | Forum | Review | PDF | Favorites | |
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