Abstract
We reveal the full energy-momentum structure of the pseudogap of underdoped high-Tc cuprate superconductors. Our combined theoretical and experimental analysis explains the spectral-weight suppression observed in the B2g Raman response at finite energies in terms of a pseudogap appearing in the single-electron excitation spectra above the Fermi level in the nodal direction of momentum space. This result suggests an s-wave pseudogap (which never closes in the energy-momentum space), distinct from the d-wave superconducting gap. Recent tunneling and photoemission experiments on underdoped cuprates also find a natural explanation within the s-wave pseudogap scenario.
Original language | English |
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Article number | 107001 |
Journal | Physical Review Letters |
Volume | 111 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2013 Sep 3 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)