Pseudogaps

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The ARPES results reported here show the way in which, as the temperature is lowered below T*, quasiparticle localization in the pseudogap state steals away part of the available Fermi surface, so that the density of quasiparticles available to condense in the superconducting state at Tc is substantially reduced from its optimum value found at higher doping levels, and the resultant superconductivity is "weak." (Unit: 8)