Electronic Raman scattering on out-of-plane disordered Bi2Sr2CaCu2O8+δ: How the pseudogap affects the superconducting Raman response
N. Murai, T. Masui, M. Ishikado, S. Ishida, H. Eisaki, S. Uchida, S. Tajima
DOI 10.1103/PhysRevB.91.214520 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We report Raman scattering measurements on Bi2Sr2CaCu2O8+δ single crystals with a different degree of out-of-plane disorder to examine the effect of Tc change on the the electronic Raman response at the optimal doping level. The B1g peak energies for lower Tc disordered samples are essentially independent of Tc. However, a further increase of Tc by minimizing the degree of out-of-plane disorder leads to a high-energy shift of the B1g peak. Interestingly, abrupt change of the B1g peak energy occurs when the the superconducting gap energy exceeds the pseudogap energy, which results in the recovery of superconductivity-dominated Raman response in B1g symmetry. It suggests that these anomalous properties of the antinodal electrons are a consequence of the unconventional superconducting state of the cuprates where superconductivity coexists with the pseudogap in the ground state.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 77 | Pressure not reported | onset |
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91.5 | Pressure not reported | onset |
| Bi2Sr2Y0.08Ca0.92Cu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 96 | Pressure not reported | onset |
| Bi2.3Sr1.7CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 77 | Pressure not reported | onset |
| Bi2.1Sr1.9CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91.5 | Pressure not reported | onset |
Similar papers
Effect of out-of-plane disorder on superconducting gap anisotropy in Bi2+xSr2−xCaCu2O8+δ as seen via Raman spectroscopy
similarity 0.96N. Murai et al.
Source status unknown — claims are unverified
Novel Anisotropy in the Superconducting Gap Structure of Bi2Sr2CaCu2O8+δ Probed by Quasiparticle Heat Transport
similarity 0.96Yoichi Ando et al.
Source status unknown — claims are unverified
Temperature and doping dependence of the Bi2.1Sr1.9CaCu2O8+δ pseudogap and superconducting gap
similarity 0.95Azusa Matsuda et al.
Source status unknown — claims are unverified
Electronic Raman scattering in high-Tc superconductors: A probe of dx2-y2 pairing
similarity 0.95T. P. Devereaux et al.
Source status unknown — claims are unverified
Pseudogap and Superconducting Gap in the Electronic Raman Spectra of Underdoped Cuprates
similarity 0.95R. Nemetschek et al.
Source status unknown — claims are unverified
Doping dependence of the low-energy excitations in superconducting Bi2Sr2CaCu2O8+δ: Evidence for thermal phase fluctuations
similarity 0.94G. Lamura et al.
Source status unknown — claims are unverified