Doping Dependence of the Mass Enhancement in (Pb,Bi)2Sr2CaCu2O8 at the Antinodal Point in the Superconducting and Normal States
T. K. Kim, A. A. Kordyuk, S. V. Borisenko, A. Koitzsch, M. Knupfer, H. Berger, J. Fink
DOI 10.1103/PhysRevLett.91.167002 · Physical Review Letters
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Abstract
Angle-resolved photoemission spectroscopy is used to study the mass renormalization of the charge carriers in the high-Tc superconductor (Pb,Bi)2Sr2CaCu2O8 in the vicinity of the (π,0) point in the superconducting and the normal states. Using matrix element effects at different photon energies and due to a high momentum and energy resolution the bonding and the antibonding bands could be separated in the whole dopant range. A huge coupling to a bosonic collective mode is observed below Tc for both bands, in particular, for the underdoped case. Above Tc, a weaker coupling to a continuous spectrum of modes is detected.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (Pb,Bi)2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 69 | Pressure not reported | unknown |
| (Pb,Bi)2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89 | Pressure not reported | unknown |
| (Pb,Bi)2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 77 | Pressure not reported | unknown |
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