Heidelberg 2015 – wissenschaftliches Programm
A 35.11: Poster
Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer
Parity violation effects in the Josephson junction of a p-wave superconductor — •Nikolay Belov and Zoltán Harman — Max Planck Institute for Nuclear Physics
The electroweak theory, combining two fundamental interactions – electromagnetic and weak, was introduced by Salam, Glashow and Weinberg in 1970s. It explains the nuclear beta-decay and weak effects in particle physics. One of the most interesting properties of the electroweak theory is the spatial parity violation (PV). Firstly PV was experimentally detected in the beta decay. PV terms of the electroweak interaction can also influence the interaction of electrons with the crystal lattice of nuclei in the solid state. Possible solid state systems, where one may detect PV contribution are superconductors (SC). The main advantage of the PV detection in SC is the small size and relatively small price of the possible experimental setup. The idea that parity violation effects can appear in superconductors was supposed by A. I. Vainstein and I. B. Khriplovich in 1974. They have showed that this electroweak contribution is negligible small in conventional s-wave superconductors. In our work we present an estimate for this effect to be observed in unconventional p-wave ferromagnetic superconductors. This estimation gives values several orders of magnitude larger than for the s-wave case and shows that the PV effect may be observed in future.