The Concept of Superconducting Fitness
Date
Tuesday, December 19, 2017 11:00 - 12:30
Speaker
Aline Ramires Neves de Oliveira (ITS/ETH Zurich)
Location
Big Seminar room Ground floor / Office Bldg West (I21.EG.101)
Series
Seminar/Talk
Tags
Physical Sciences Seminar
Host
Maksym Serbyn
Contact
In this talk I present a general scheme to probe the compatibility of arbitrary pairing states with a given normal state Hamiltonian by the introduction of a concept called Superconducting Fitness. This quantity gives a direct measure of the suppression of the superconducting critical temperature in the presence of key symmetry-breaking fields and can be used as a tool to identify nontrivial mechanisms to suppress superconductivity in complex multi-orbital systems. This concept can also be employed as a guide to engineer normal state Hamiltonians in order to favour or suppress different order parameters. I discuss the application of this idea to Sr2Ru04, CePt3Si, KFe2As2 and CuxBi2Se3.