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Zn-substitution effects on the normal optical conductivity and the superconducting gap (1996)

Tajima, S. ; Hauff, R. ; Jang, W. -J. ; [weitere]

Springer

Journal of low temperature physics 105 (1996), S. 743-748

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Details

ISSN: 1573-7357

Schlagwort(e): 74.72.Bk ; 74.25.Gz ; 74.62.Dh

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The Zn-substitution effects on the c-axis optical spectra have been investigated for highly oxygenated YBa2 Cu3Oy crystals with y = 6.88 – 6.92. In the normal state, the Zn-substitution does not affect the high frequency conductivity but changes the ω-dependence of the scattering rate at low frequencies, leading to the increase in the dc resistivity in the c-direction. In the superconducting state, we observed a pronounced effect of Zn-substitution that a large number of unpaired carriers form a Drude-like absorption band within the gap, keeping the maximum gap amplitude unchanged. The missing area which gives the superfluid density is found to correlate with Tc.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00768472

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