AMADEUS Seminar - Dr. Sergey Mironov, - Monday 4 november 2019, 02:00 pm - LOMA (Salle des séminaires, 215))04/11 : 14h
Dr. Sergey MIRONOV
Institute for Physics of Microstructures, Nizhniy Novgorod, Russia
Spontaneous currents in superconductor/ferromagnet hybrids
The seminar is devoted to the exotic electrodynamic phenomena originating at the interfaces between superconductors (S) and ferromagnets (F) due to the exchange of electrons between these two types of materials. First, we show that the spread of the Cooper pairs from the superconductor to the ferromagnet causes a strong inverse electromagnetic phenomenon, namely, the long-range transfer of the magnetic field from the ferromagnet to the superconductor. Another origin of the spontaneous current flowing along the S/F interfaces is the strong spin-orbit coupling arising due to the local breaking of the inversion symmetry. Such current creates a magnetic field near the superconductor surface, generates a stray magnetic field outside the sample edges and may generate the spontaneous Abrikosov vortices near the interface.