ISSN:
1573-7357
Keywords:
74.72.Bk
;
74.25.Gz
;
74.62.Dh
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00768472
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