Universal conductance fluctuations and low-temperature 1/f noise in mesoscopic AuFe spin glasses

Neuttiens, G. and Strunk, Christoph and Van Haesendonck, C. and Bruynseraede, Y. (2000) Universal conductance fluctuations and low-temperature 1/f noise in mesoscopic AuFe spin glasses. PHYSICAL REVIEW B, 62 (6). pp. 3905-3909. ISSN 1098-0121, 1550-235X

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Abstract

We report on intrinsic time-dependent conductance fluctuations observed in mesoscopic AuFe spin-glass wires. These dynamical fluctuations have a 1/f-like spectrum and appear below the measured spin-glass freezing temperature of our samples. The dependence of the fluctuation amplitude on temperature, magnetic field, voltage, and Fe concentration allows a consistent interpretation in terms of quantum interference effects, that are sensitive to the slowly fluctuating spin configuration.

Item Type: Article
Uncontrolled Keywords: ELECTRICAL NOISE; WIRES; FILMS; CUMN; BI;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk
Depositing User: Dr. Gernot Deinzer
Date Deposited: 30 Mar 2022 12:02
Last Modified: 30 Mar 2022 12:02
URI: https://pred.uni-regensburg.de/id/eprint/42306

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