Properties of Ferromagnetic Tunnel Junctions with Low Resistance
نویسندگان
چکیده
منابع مشابه
Noise properties of ferromagnetic tunnel junctions
We report measurements of voltage fluctuations in magnetic tunnel junctions which exhibit both high and low magnetoresistance ~MR!. The voltage noise power normalized to the square of the junction bias voltage was 10/Hz at a frequency of 1 Hz in a high MR junction. Low MR junctions had significantly higher noise power at 1 Hz and the origin of the noise was not magnetic. In these junctions, ran...
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A. S. Vasenko,1,2,* A. A. Golubov,1 M. Yu. Kupriyanov,3 and M. Weides4 1Faculty of Science and Technology and MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands 2Department of Physics, Moscow State University, Moscow 119992, Russia 3Nuclear Physics Institute, Moscow State University, Moscow 119992, Russia 4Center of Nanoelectronic Systems for Information...
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• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version ...
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We fabricated high quality Nb/Al2O3/Ni(0.6)Cu(0.4)/Nb superconductor-insulator-ferromagnet-superconductor Josephson tunnel junctions. Using a ferromagnetic layer with a steplike thickness, we obtain a 0-pi junction, with equal lengths and critical currents of 0 and pi parts. The ground state of our 330 microm (1.3lambda(J)) long junction corresponds to a spontaneous vortex of supercurrent pinne...
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We have studied the voltage fluctuations of current-biased, micron-scale magnetic tunnel junctions. We find that the spectral power density is 1/f -like at low frequencies and becomes frequency independent at high frequencies. The frequency-independent background noise is due to Johnson-Nyquist noise and shot noise mechanisms. The nature of the 1/f noise has its origin in two different mechanis...
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ژورنال
عنوان ژورنال: Journal of the Magnetics Society of Japan
سال: 2001
ISSN: 0285-0192,1880-4004
DOI: 10.3379/jmsjmag.25.787