Effect of a normal-state pseudogap on optical conductivity in underdoped cuprate superconductors
T. Dahm, D. Manske, L. Tewordt
DOI 10.1103/PhysRevB.60.14888 · 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 calculate the c-axis infrared conductivity σc(ω) in underdoped cuprate superconductors for spin fluctuation exchange scattering within the CuO2 planes including a phenomenological d-wave pseudogap of amplitude Eg. For temperatures decreasing below a temperature T*∼Eg/2, a gap for ω<2Eg develops in σc(ω) in the incoherent (diffuse) transmission limit. The resistivity shows “semiconducting” behavior, i.e., it increases for low temperatures above the constant behavior for Eg=0. We find that the pseudogap structure in the in-plane optical conductivity is about twice as big as in the interplane conductivity σc(ω), in qualitative agreement with experiment. This is a consequence of the fact that the spin fluctuation exchange interaction is suppressed at low frequencies as a result of the opening of the pseudogap. While the c-axis conductivity in the underdoped regime is described best by incoherent transmission, in the overdoped regime coherent conductance gives a better description.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Doping-dependent quasiparticle band structure in cuprate superconductors
similarity 0.97R. Eder et al.
Source status unknown — claims are unverified
Weak Pseudogap Behavior in the Underdoped Cuprate Superconductors
similarity 0.97Jörg Schmalian et al.
Source status unknown — claims are unverified
Electronic pseudogap of optimally doped high-temperature Nd2−xCexCuO4 superconductors
similarity 0.97D. K. Sunko & S. Barišić
Source status unknown — claims are unverified
Influence of gap extrema on the tunneling conductance near an impurity in an anisotropic superconductor
similarity 0.97J. M. Byers et al.
Source status unknown — claims are unverified
Fermi arcs in cuprate superconductors: Tracking the pseudogap below Tc and above T*
similarity 0.96J. G. Storey et al.
Source status unknown — claims are unverified
Quasiparticles in high-temperature superconductors: Consistency of angle-resolved photoemission and optical conductivity
similarity 0.96A. J. Millis & H. D. Drew
Source status unknown — claims are unverified