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VOLUME 61 (1995) | ISSUE 2 |
PAGE 105
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Possible self-selection of tunnel channels with reproducible electrical parameters
Vyshenski S. V.
Coulomb correlations may cause self-selection of quasi-one-dimensional current channels in a specially prepared granulated material. The characteristic resistance R0 of a single channel is much larger than the resistance quantum RK. It depends on bulk properties of the material and on the macroscopic geometry of the sample, and may be tuned by nearby gate. Total resistance of the sample becomes quantized in units of R0. Values of R0 and control voltages may be reproducible from sample to sample. The present experimental status of this idea and its possible applications to single-electron devices operating at up to room temperature are discussed. © 1995 American Institute of Physics.
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