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 |
|---|---|
| Article number | 107001 |
| Journal | Physical Review Letters |
| Volume | 111 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2013 Sep 3 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Raman-scattering measurements and theory of the energy-momentum spectrum for Underdoped Bi2Sr2CaCuO8+δ Superconductors : Evidence of an s-wave structure for the pseudogap. / Sakai, S.; Blanc, S.; Civelli, M.; Gallais, Y.; Cazayous, M.; Méasson, M. A.; Wen, J. S.; Xu, Z. J.; Gu, G. D.; Sangiovanni, G.; Motome, Y.; Held, K.; Sacuto, A.; Georges, A.; Imada, Masatoshi.
In: Physical Review Letters, Vol. 111, No. 10, 107001, 03.09.2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Raman-scattering measurements and theory of the energy-momentum spectrum for Underdoped Bi2Sr2CaCuO8+δ Superconductors
T2 - Evidence of an s-wave structure for the pseudogap
AU - Sakai, S.
AU - Blanc, S.
AU - Civelli, M.
AU - Gallais, Y.
AU - Cazayous, M.
AU - Méasson, M. A.
AU - Wen, J. S.
AU - Xu, Z. J.
AU - Gu, G. D.
AU - Sangiovanni, G.
AU - Motome, Y.
AU - Held, K.
AU - Sacuto, A.
AU - Georges, A.
AU - Imada, Masatoshi
PY - 2013/9/3
Y1 - 2013/9/3
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84884245926&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84884245926&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.111.107001
DO - 10.1103/PhysRevLett.111.107001
M3 - Article
AN - SCOPUS:84884245926
VL - 111
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 10
M1 - 107001
ER -