Физика Низких Температур: Том 44, Выпуск 4 (Апрель 2018), c. 343-356 ( к оглавлению , назад )
Anatomy of point-contact Andreev reflection spectroscopy from the experimental point of view
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, FIN-20014 Turku, Finland
Turku University Centre for Materials and Surfaces (MatSurf), FIN-20014 Turku, Finland
Received October 11, 2017
We review applications of point-contact Andreev-reflection spectroscopy to study elemental superconductors, where theoretical conditions for the smallness of the point-contact size with respect to the characteristic lengths in the superconductor can be satisfied. We discuss existing theoretical models and identify new issues that have to be solved, especially when applying this method to investigate more complex superconductors. We will also demonstrate that some aspects of point-contact Andreev-reflection spectroscopy still need to be addressed even when investigating ordinary metals.
PACS: 74.45.+с Proximity effects; Andreev reflection; SN and SNS junctions;
Ключевые слова: point contact, Andreev reflection, spin polarization.
Published online: February 26, 2018