Solid State Theory Seminar

Johannes Bauer, Harvard University, USA

Realizing a Kondo-correlated state with ultracold atoms

We propose a novel realization of Kondo physics with ultracold atomic gases. It
is based on a Fermi sea of two different hyperfine states of one atom species
forming bound states with a different species, which is spatially confined in a
trapping potential. We show that different situations displaying Kondo physics
can be realized when Feshbach resonances between the species are tuned by a
magnetic field and the trapping frequency is varied. We illustrate that a
mixture of ${}^{40}$K and ${}^{23}$Na atoms can be used to generate a Kondo
correlated state and that momentum resolved radio frequency spectroscopy
can provide unambiguous signatures of the formation of Kondo resonances at
the Fermi energy. We discuss how tools of atomic physics can be used to
investigate open questions for Kondo physics, such as the extension of the
Kondo screening cloud.

Monday, 17.03.14

10:15 h - 11:15 h

Theresienstraße 37