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| VOLUME 89 | ISSUE 1 |
PAGE 26
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| Tuning of tunneling current noise spectra singularities by localized states charging |
V. N. Mantsevich, N. S. Maslova1)
+Moscow State University, Department of Physics, 119991 Moscow, Russia
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PACS: 05.40.-a, 71.10.-w, 73.40.Gk
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Abstract
We report the results of theoretical investigations of
tunneling current noise spectra in a wide range of applied bias
voltage. Localized states of individual impurity atoms play an
important role in tunneling current noise formation. It was found
that switching «on" and «off" of Coulomb interaction of conduction
electrons with two charged localized states results in power law
singularity of low-frequency tunneling current noise spectrum
(1/fα) and also results on high frequency component of
tunneling current spectra (singular peaks appear).
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