The image depicts the single-particle spectral function measured above the critical temperature (Tc) through an artistic representation. (IMAGE)

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The image depicts the single-particle spectral function measured above the critical temperature (Tc) through an artistic representation.

Caption

Red and blue spheres symbolize fermionic atoms with up and down spins, respectively. The curved surfaces with grids represent the momentum-energy landscapes for quasi-particles. Paired fermions inhabit the lower surface while unpaired fermions occupy the upper surface. The gap between the surfaces signifies the pseudogap, indicating that a minimal amount of energy is required to break the fermion pairs. Blurred fermion pairs in the gap suggest a partial filling of the pseudogap. 

Credit

Image by CHEN Lei

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