On the anomalous flicker noise intensity in high-temperature superconductors |
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Authors: | Kirill A Kazakov |
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Institution: | aDepartment of Theoretical Physics, Physics Faculty, Moscow State University, 119991 Moscow, Russian Federation |
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Abstract: | The problem of anomalously high levels of flicker noise observed in the normal state of the high-temperature superconductors is addressed. It is argued that the anomaly is the result of incorrect normalization of the power spectra according to the Hooge formula. A careful analysis of the available experimental data is given, which shows that the scaling of the spectral power with sample size is essentially different from the inverse proportionality. It is demonstrated that the measured spectra obey the law given by the recently proposed quantum theory of fundamental flicker noise. |
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Keywords: | Flicker noise Hooge law High-temperature superconductors Metal films |
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