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Excess conductivity of Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ superconductors
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10.1063/1.3677234
/content/aip/journal/ltp/38/1/10.1063/1.3677234
http://aip.metastore.ingenta.com/content/aip/journal/ltp/38/1/10.1063/1.3677234

Figures

Image of FIG. 1.
FIG. 1.

X-ray diffraction pattern of Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0.5, 1.5, 2.5) superconductor samples.

Image of FIG. 2.
FIG. 2.

Resistivity vs temperature plot of as prepared Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0, 0.5, 1.5, 2.5) samples (a). Resistivity vs temperature plot of as oxygen annealed Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0, 0.5, 1.5, 2.5) samples (b).

Image of FIG. 3.
FIG. 3.

AC-susceptibility (B = 0) of as-prepared Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0, 0.5, 1.5, 2.5) samples, showing onset diamagnetic temperatures (a). AC-susceptibility (B = 0) of oxygen annealed Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0, 0.5, 1.5, 2.5) samples, showing onset diamagnetic temperatures (b).

Image of FIG. 4.
FIG. 4.

FTIR of as prepared Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0, 0.5, 1.5, 2.5) samples (a). FTIR of oxygen annealed Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0, 0.5, 1.5, 2.5) samples (b).

Image of FIG. 5.
FIG. 5.

ln(Δσ) versus ln(ɛ) plot of as prepared Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ at different y: 0 (a); 0.5 (b); 1.5 (c); 2.5 (d).

Image of FIG. 6.
FIG. 6.

ln(Δσ) versus ln(ɛ) plot of oxygen annealed Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ sample at different y: 0 (a); 0.5 (b); 1.5 (c); 2.5 (d).

Tables

Generic image for table
Table I.

The parameters extracted from the FIC analysis of as prepared Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0, 0.5, 1.5, 2.5) samples.

Generic image for table
Table II.

The widths of 3D, 2D and 0D fluctuation regions observed from the fitting of the experimental data of as prepared Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0, 0.5, 1.5, 2.5) samples using AL model.

Generic image for table
Table III.

The parameters extracted from the FIC analysis of oxygen annealed Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0, 0.5, 1.5, 2.5) samples.

Generic image for table
Table IV.

The widths of 3D, 2D and 0D fluctuation regions observed from the fitting of the experimental data of oxygen annealed Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0, 0.5, 1.5, 2.5) samples using AL model.

Generic image for table
Table V.

The Fermi velocity vF , phase-relaxation time for cooper pair t ϕ, coupling constant λ, and energy require to break apart the Cooper pair of Cu0.5Tl0.5Ba2Ca3Cu4− y Zn y O12−δ (y = 0, 0.5, 1.5, 2.5) as-prepared and oxygen post-annealed samples.

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/content/aip/journal/ltp/38/1/10.1063/1.3677234
2012-02-02
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Excess conductivity of Cu0.5Tl0.5Ba2Ca3Cu4−yZnyO12−δ superconductors
http://aip.metastore.ingenta.com/content/aip/journal/ltp/38/1/10.1063/1.3677234
10.1063/1.3677234
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