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 as long as the samples are carefully characterized with respect to the local electronic parameters.
- Received 6 June 2012
DOI:https://doi.org/10.1103/PhysRevB.86.155402
©2012 American Physical Society