Scattering Rate Gap in the IR Response of HgBa_2Ca_2Cu_3O_{8+delta}

Details Scattering Rate Gap in the IR Response of HgBa_2Ca_2Cu_3O_{8+delta} Scattering Rate Gap in the IR Response of HgBa_2Ca_2Cu_3O_{8+delta}

1999-12-17

arxiv.org/abs/cond-mat/9912338v1

Phys. Rev. B 62, 8711 (2000).

Physics

Condensed Matter

Superconductivity

4 pages with 5 embedded figures. Submitted to PRL

Scientific paper

10.1103/PhysRevB.62.8711

The ab-plane optical spectra of one underdoped and one nearly optimally doped single crystal of HgBa_2Ca_2Cu_3O_{8+delta} were investigated in the frequency range from 40 to 40,000 cm^-1. The frequency dependent scattering rate was obtained by Kramers Kronig analysis of the reflectance. Both crystals have a scattering rate gap of about 1000 cm^-1 which is much larger than the 700 cm^-1 gap seen in optical studies of several cuprates with maximum Tc around 93 K. There appears to be a universal scaling between scattering rate gap and maximum Tc for the cuprate superconductors.

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