Transport entropy of vortex motion in YBa2Cu3O7

T. T.M. Palstra; B. Batlogg; L. F. Schneemeyer; J. V. Waszczak

doi:10.1103/PhysRevLett.64.3090

Transport entropy of vortex motion in YBa2Cu3O7

T. T.M. Palstra, B. Batlogg, L. F. Schneemeyer, J. V. Waszczak

Chemistry and Biochemistry

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Abstract

We report measurements of entropy transport due to vortex motion in single-cyrstal YBa2Cu3O7. From these magnetothermal measurements we are able to determine thermodynamic properties, such as the transport line energy and superconducting phase boundary Tc(H), as well as transport parameters associated with flux motion. Below Tc, the data are compared with the microscopic theory of Caroli and Maki. Interestingly, we also find entropy transport in the fluctuation regime above Tc, which grows with applied field and for which no theory exists.

Original language	English
Pages (from-to)	3090-3093
Number of pages	4
Journal	Physical Review Letters
Volume	64
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.64.3090
State	Published - 1990

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abstract = "We report measurements of entropy transport due to vortex motion in single-cyrstal YBa2Cu3O7. From these magnetothermal measurements we are able to determine thermodynamic properties, such as the transport line energy and superconducting phase boundary Tc(H), as well as transport parameters associated with flux motion. Below Tc, the data are compared with the microscopic theory of Caroli and Maki. Interestingly, we also find entropy transport in the fluctuation regime above Tc, which grows with applied field and for which no theory exists.",

author = "Palstra, {T. T.M.} and B. Batlogg and Schneemeyer, {L. F.} and Waszczak, {J. V.}",

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AU - Schneemeyer, L. F.

AU - Waszczak, J. V.

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N2 - We report measurements of entropy transport due to vortex motion in single-cyrstal YBa2Cu3O7. From these magnetothermal measurements we are able to determine thermodynamic properties, such as the transport line energy and superconducting phase boundary Tc(H), as well as transport parameters associated with flux motion. Below Tc, the data are compared with the microscopic theory of Caroli and Maki. Interestingly, we also find entropy transport in the fluctuation regime above Tc, which grows with applied field and for which no theory exists.

AB - We report measurements of entropy transport due to vortex motion in single-cyrstal YBa2Cu3O7. From these magnetothermal measurements we are able to determine thermodynamic properties, such as the transport line energy and superconducting phase boundary Tc(H), as well as transport parameters associated with flux motion. Below Tc, the data are compared with the microscopic theory of Caroli and Maki. Interestingly, we also find entropy transport in the fluctuation regime above Tc, which grows with applied field and for which no theory exists.

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DO - 10.1103/PhysRevLett.64.3090

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Transport entropy of vortex motion in YBa2Cu3O7

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