Speaker
James Hinton
(UC Berkeley, LBNL)
Description
James Hinton, Jake Koralek (LBNL, UC Berkeley)
Guichan Yu, Mun Chan (University of Minnesota)
Neven Barisic (University of Minnesota, University of Stuttgart)
Martin Greven (University of Minnesota)
Joe Orenstein (LBNL, UC Berkeley)
We employed time resolved reflectivity (TRR) and transieng grating spectroscopy (TGS) to study the electron doped cuprate superconductor Nd(2-x)Ce(x)CuO4 across a broad temperature and doping range. The pseudogap (PG) response above Tc is consistent with excitation of fluctuating antiferromagnetic order, previously observed in two-magnon Raman scattering. Cooling below Tc, we see the onset of a response due to photo-excitation of superconducting quasiparticles. This SC signal coexists with the PG signal, which is partially suppressed below Tc, suggestive of competition between the SC and PG orders.
Primary author
James Hinton
(UC Berkeley, LBNL)
