Quantum degenerate fermi-bose mixtures of K-40 and Rb-87 atoms in a quadrupole-ioffe configuration trap

摘要

We report on the attainment of quantum degeneracy of 40 K by means of efficient thermal collisions with the evaporatively cooled Rb-87 atoms. In a quadrupole-Ioffe configuration trap, potassium atoms are cooled to 0.5 times the Fermi temperature. We obtain up to 7.59 x 10(5) degenerate fermions K-40.