Comment on Anomalous peak in the thermopower of YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] single crystals: A possible fluctuation effect''

Journal Article · Tue Jun 01 00:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.47.15322· OSTI ID:6769467

Logvenov, G Y; Ryazanov, V V; Gross, R; Kober, F ^[1]

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1. Lehrstuhl Experimentalphysik II, Universitaet Tuebingen, Morgenstelle 14, D-7400 Tuebingen (Germany)

In an experiment of Howson [ital et] [ital al]. the temperature dependence of the thermopower of a YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] single crystal was measured with an oscillating heat source. A sharp peak in the temperature dependence of the thermopower in the vicinity of the critical temperature was observed. In contrast, Ri [ital et] [ital al]., who used a dc technique, could not observe such a peak. We show that the observation of the peak may be an artifact of the ac measuring technique used by Howson [ital et] [ital al].

• OSTI ID: 6769467
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 47:22; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
CUPRATES
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TEMPERATURE EFFECTS
THERMOELECTRIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES