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arXiv · 1209.2821

Experimental verification of contact-size estimates in point-contact spectroscopy on superconductor/ferromagnet heterocontacts

J. Gramich·P. Brenner·C. Sürgers·H. v. Löhneysen·G. Goll
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Abstract

Nanostructured superconductor/ferromagnet heterocontacts are studied in the different transport regimes of point-contact spectroscopy. Direct measurements of the nanocontact size by scanning electron microscopy allow a comparison with theoretical models for contact-size estimates of heterocontacts. Our experimental data give evidence that size estimates yield reasonable values for the point-contact diameter $d$ as long as the samples are carefully characterized with respect to the local electronic parameters.

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J. Gramich, P. Brenner, C. Sürgers, H. v. Löhneysen, G. Goll. 2012-09-13. Experimental verification of contact-size estimates in point-contact spectroscopy on superconductor/ferromagnet heterocontacts. https://doi.org/10.1103/physrevb.86.155402

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