Theoretical Physics Seminar – Annica Black-Schaffer

Annica Black-Schaffer: New mechanisms and materials for odd-frequency superconductivity

Abstract

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) hybrid structures and has also enabled the emerging field of superconducting spintronics. More recently, we have identified odd-frequency superconductivity also in many known bulk superconductors, ranging from doped topological insulators and multiband superconductors, such as Sr2RuO4 and UPt3, to light-driven conventional superconductors. In this talk I will give an introduction to odd-frequency superconductivity followed by a review of a few systems and materials where odd-frequency superconductivity has recently proven to be important for our understanding of the superconducting state.

The seminar will be held in hybrid form

You can attend either in person or via Zoom.

Location: PJ-salen, Department of Physics, Kemigården 1, Gothenburg
Zoom-link: https://gu-se.zoom.us/j/68654155504

Read more about the seminar series

Theoretical Physics Seminar