Magnetic penetration depth of Tl[sub 2]Ba[sub 2]CuO[sub 6+[delta]]. Tc [approximately] [sigma][sub 0] in the overdoped region

Conference · Tue Feb 01 00:00:00 EST 1994 · Journal of Superconductivity; (United States)

OSTI ID:7071485

Niedermayer, C; Bernhard, C; Binninger, U; Glueckler, H ^[1]; Tallon, J L ^[2]; Ansaldo, E J ^[3]; Budnick, J I ^[4]

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1. Universitaet Konstanz (Germany)
2. New Zealand Inst. for Industrial Research and Development, Lower Hutt (New Zealand)
3. TRIUMF and Univ. of Saskatchewan, Saskatoon (Canada)
4. Univ. of Connecticut, Storrs, CT (United States)

We report transverse-field muon-spin-rotation experiments carried out on Tl[sub 2]Ba[sub 2]CuO[sub 6+[delta]]. This system spans the whole overdoped regime, and Tc is reduced by excess oxygen doping, which increases the normal-state carrier concentration. In the heavily overdoped regime [sigma](0) is found to scale linearly with the superconducting critical temperature Tc, similar to the behavior previously observed for other cuprates in the underdoped regime. However, for the overdoped region one has to explain the reduction of [sigma][sub 0], thus the increase of the magnetic penetration depth [lambda], in spite of an increasing normal-state carrier concentration. We discuss some possible explanations for this behavior. 19 refs., 2 figs.

• OSTI ID: 7071485
• Report Number(s): CONF-930710-; CODEN: JOUSEH; TRN: 94-014487
• Journal Information: Journal of Superconductivity; (United States), Vol. 7:1; Conference: Physics and chemistry of molecular and oxide superconductors conference, Eugene, OR (United States), 27-31 Jul 1993; ISSN 0896-1107
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
TRANSITION TEMPERATURE
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CERAMICS
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OXIDES
THALLIUM COMPOUNDS
THERMOELECTRICITY
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRICITY
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SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
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