53 citations · 192 across the 22 of their papers we have counts for
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Spin polarization versus lifetime effects at point contacts between superconducting niobium and normal metals
Elina Tuuli, Kurt Gloos
Point-contact Andreev reflection spectroscopy is used to measure the spin polarization of metals but analysis of the spectra has encountered a number of serious challenges, one of…
Normal reflection at superconductor - normal metal interfaces due to Fermi surface mismatch
Elina Tuuli, Kurt Gloos
Electrons can be reflected at an interface between two metals because of a dielectric barrier or different properties of the Fermi surface. Andreev reflection allows to directly me…
Break-junction experiments on the zero-bias anomaly of non-magnetic and ferromagnetically ordered metals
Kurt Gloos, Elina Tuuli
We have investigated break junctions of normal non-magnetic metals as well as ferromagnets at low temperatures. The point contacts with radii 0.15 - 15 nm showed zero-bias anomalie…
Phonon-drag induced suppression of the Andreev hole current in superconducting niobium contacts
Kurt Gloos, Jouko Huupponen, Elina Tuuli
We have investigated how the Andreev-reflection hole current at ballistic point contacts responds to a large bias voltage. Its strong suppression could be explained by the drag exc…
Andreev-reflection spectroscopy of ferromagnets: the impact of Fermi surface mismatch
Elina Tuuli, Kurt Gloos
We have investigated point contacts between a superconductor (Nb, AuIn2) and a normal metal (ferromagnetic Co, non-magnetic Cu). The observed Andreev-reflection spectra were analyz…