False color images of a condensate formed from pairs of fermion potassium atoms. Higher areas indicate a greater density of atoms.
Images from left to right correspond to the increasing strength of attraction between the atoms that form fermion pairs as the magnetic field strength is varied.
Scientists at JILA, a joint laboratory of the Department of Commerce’s National Institute of Standards and Technology (NIST) and the University of Colorado at Boulder (CU-Boulder) report the first observation of a "fermionic condensate" formed from pairs of atoms in a gas, a long-sought, novel form of matter. Physicists hope that further research with such condensates eventually will help unlock the mysteries of high-temperature superconductivity, a phenomenon with the potential to improve energy efficiency dramatically across a broad range of applications.
The research is described in a paper to be published in the Jan. 24-30 online edition of Physical Review Letters by JILA authors Deborah S. Jin, a physicist at NIST and an adjoint associate professor at CU-Boulder, and Markus Greiner and Cindy Regal, a post-doctoral researcher and graduate student at CU-Boulder. (Expected publication date is Jan. 28, 2004.)
"The strength of pairing in our fermionic condensate, adjusted for mass and density," Jin explains, "would correspond to a room temperature superconductor. This makes me optimistic that the fundamental physics we learn through fermionic condensates will eventually help others design more practical superconducting materials."
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