1998/04/10 by Carey Huscroft, Richard T. Scalettar · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Coupling (piping) #Crossover #Cuprate #Density of states #Diagonal #Electron #Fermi level #Materials science #Omega #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Pseudogap #Quantum and electron transport phenomena #Quantum mechanics #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.81.2775
4 pages, 4 figures
arxiv created 1998/04/10 · openalex publication_date 1998/09/28 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We determine the effect of a random potential on the density of states N(\ensuremathω) in the attractive Hubbard model. At weak coupling, disorder closes the gap concurrently with the destruction of superconductivity. At larger, but still intermediate coupling, a pseudogap in N(\ensuremathω) remains beyond the point at which off-diagonal long range order vanishes. This change in the elementary excitations of the insulating phase corresponds to a crossover between Fermi and Bose insulators.