Point-contact Andreev reflection spectroscopy of a magnetic superconductor Dy0.6Y0.4Rh3.85Ru0.15B4

Andreev-reflection and Point-contact Spectroscopy of Superconducting Rare Earth Transition Metal Borocarbides

Role of critical current on the point-contact Andreev reflection spectra between a normal metal and a superconductor

The point-contact spectrum between a normal metal and a superconductor often shows unexpected sharp dips in the conductance at voltage values larger than the superconducting energy gap. These dips are not predicted in the Blonder-Tinkham-Klapwijk ~BTK! theory, commonly used to analyze these contacts. We present here a systematic study of these dips in a variety of contacts between different com...

Interface spin-flip scattering model for point contact Andreev reflection

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Point-Contact Andreev-Reflection Spectroscopy in Fe-Based Superconductors: Multigap Superconductivity and Strong Electron–Boson Interaction

We performed point-contact Andreev-reflection measurements in Ba(Fe1−xCox)2As2 single crystals (x = 0.1, Tc = 24.5 K) and SmFeAsO1−xFx polycrystals (x = 0.2, Tc = 52 K). The spectra indicate the presence of two superconducting gaps with no line nodes on the Fermi surface, but also feature additional structures related to the electron–boson interaction (EBI). From the spectra, it is possible to ...

Magnetoanisotropic Andreev reflection in ferromagnet-superconductor junctions.

Andreev reflection spectroscopy of ferromagnet-superconductor (FS) junctions [corrected] is an important probe of spin polarization. We theoretically investigate spin-polarized transport in FS junctions in the presence of Rashba and Dresselhaus interfacial spin-orbit fields and show that Andreev reflection can be controlled by changing the magnetization orientation. We predict a giant in- and o...