Dependence of the low-temperature specific heat of YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} on {delta} and magnetic field: The H{sup {1/2}}T term for H{ne}0; absence of evidence for a T{sup 2} term for H=0

Journal Article · Fri Nov 01 00:00:00 EST 1996 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/BF00768496· OSTI ID:457251

Wright, D A; Emerson, J P; Woodfield, B F; Reklis, S F ^[1]

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1. Lawrence Berkeley National Lab., CA (United States); and others

Specific-heat measurements with improved precision on two new samples of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} with relatively low concentrations of paramagnetic centers are reported. For one sample the measurements were made for different values of {delta}. The data are analyzed, and the data reported earlier for another sample reanalyzed, with an improved fitting expression. In each case, the data give a well defined H{sup 1/2}T term in the mixed state. No persuasive evidence for a T{sup 2} term in the superconducting state is found.

• Sponsoring Organization: USDOE
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 457251
• Report Number(s): CONF-960808-; ISSN 0022-2291; TRN: 97:001035-0073
• Journal Information: Journal of Low Temperature Physics, Vol. 105, Issue 3-4; Conference: 3. international conference on physics and chemistry of molecular and oxide superconductors, Karlsruhe (Germany), 2-6 Aug 1996; Other Information: PBD: Nov 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
YTTRIUM OXIDES
SPECIFIC HEAT
BARIUM OXIDES
COPPER OXIDES
TEMPERATURE DEPENDENCE
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS