Condensed Matter Seminar - "New mechanisms and materials for odd-frequency superconductivity "
- Event Type
- Seminar/Symposium
- Sponsor
- Physics - Condensed Matter
- Virtual
- Date
- Mar 12, 2021 1:00 pm
- Speaker
- Annica Black-Schaffer, Uppsala University, Sweden
- Contact
- Stephen Bullwinkel
- bullwink@illinois.edu
- Phone
- 217-333-1652
- Views
- 33
- Originating Calendar
- Physics - Condensed Matter Seminar
Odd-frequency superconductivity is a remarkable superconducting phase appearing when electrons pair at unequal times, with the pair amplitude being odd under the exchange of the time coordinates, or equivalently, odd in frequency. Since odd-frequency pairing vanish at equal times it is, in contrast to conventional superconductivity, intrinsically non-local in time and represent a truly dynamical effect. Odd-frequency superconductivity has been realized to be the key to understand the surprising physics of superconductor-ferromagnet (SF) structures and has also enabled the emerging field of superconducting spintronics. More recent discoveries have identified odd-frequency superconductivity in a range of known superconductors, from doped topological insulators and multiband superconductors, such as Sr2RuO4 and UPt3, to superconducting heterostructures of Weyl semimetals, and also in light-driven conventional superconductors. In this talk I will give a conceptual introduction to odd-frequency superconductivity followed by a review of a few systems and materials where odd-frequency superconductivity is important for our understanding of the superconducting state.