Effect of a normal-state pseudogap on optical conductivity in underdoped cuprate superconductors
- Dahm, Thomas
- Manske, D
- Tewordt, L
DOIAbstract
Dahm T, Manske D, Tewordt L. Effect of a normal-state pseudogap on optical conductivity in underdoped cuprate superconductors. PHYSICAL REVIEW B. 1999;60(21):14888-14892.We calculate the c-axis infrared conductivity sigma(c)(omega) in underdoped cuprate superconductors for spin fluctuation exchange scattering within the CuO2 planes including a phenomenological cl-wave pseudogap of amplitude Eg. For temperatures decreasing below a temperature T*similar to E-g/2, a gap for omega<2E(g) develops in sigma(c)(omega) in the incoherent (diffuse) transmission limit. The resistivity shows "semiconducting" behavior, i.e., it increases for low temperatures above the constant behavior for E-g = 0. We find that the pseudogap structure in the in-plane opt...
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