Superfluid with unequal populations up and down fermions
by
Prof.Nandini Trivedi(The Ohio State University)
→
Asia/Kolkata
AG69 (Colaba Campus)
AG69
Colaba Campus
Description
What is the fate of a system with attractive interactions between
unequal populations of up and down fermions? The competition between
a fully paired superfluid and a fully polarized Fermi liquid generates
a novel intermediate phase known as the FFLO phase. Rather remarkably
in this state the pairing amplitude changes sign at domain walls that
accommodate the excess fermions. Despite fifty years of theoretical
and experimental work, there has so far been no direct observation of
this phase. I will report on a proposal to detect the FFLO state using
interferometric techniques. I will also discuss the effect of disorder
on these modulated superfluid states.
