Colloquiums INC 2023: “Utilizing spin and orbital angular momenta with superconductors”
Title: “Utilizing spin and orbital angular momenta with superconductors”
When: 28 November 2023, 12:00
Where: Sala de Conferencias, Módulo 00, Facultad de Ciencias, UAM
Abstract: In the field of superconducting spintronics, the aim is to use superconductors to either enhance spin-dependent phenomena compared to their behavior in the normal state or to identify entirely new spin-dependent phenomena without any normal state counterpart. By now, there exists a large body of literature on this topic, which has the potential to lead to cryogenic applications in fields such as quantum sensing and information technology.
Recently, it has been realized that orbital angular momentum can be transferred with a much larger magnitude than intrinsic spin angular momentum. This begs the question if superconductors can have a meaningful impact on the transport of not only spin, but also orbital angular momentum.
In this talk, I will present some of the basic concepts that enable superconductors to strongly influence spin-dependent phenomena in materials. Then, I will highlight some of the most recent advances in this field, which includes the interplay between altermagnetism and superconductivity, and how the orbital degree of freedom activates new quantum phenomena in superconductors.