Low-temperature specific heat of polycrystalline YBa2Cu3O6.70 in applied magnetic fields of 0, 1, 2, and 3 T

S. E. Stupp; T. A. Friedmann; J. P. Rice; R. A. Schweinfurth; D. J. Van Harlingen; D. M. Ginsberg

doi:10.1103/PhysRevB.43.13073

Low-temperature specific heat of polycrystalline YBa2Cu3O6.70 in applied magnetic fields of 0, 1, 2, and 3 T

S. E. Stupp, T. A. Friedmann, J. P. Rice, R. A. Schweinfurth, D. J. Van Harlingen, D. M. Ginsberg

Research output: Contribution to journal › Article › peer-review

Abstract

We have measured the specific heat of sintered YBa2Cu3O6.70 powder between 1.85 and 77 K in zero magnetic field, and between 1.75 and 9.5 K in applied fields up to 3 T. The sample was characterized by x-ray diffraction, scanning electron microscopy, iodometric titration, and magnetic susceptibility. The onset of the diamagnetic transition to the superconducting state occurred at Tc=67 K. For the specific heat in nonzero applied magnetic field, there is an increase in the magnitude of the term that is linear in temperature, and a decrease in the term that is cubic in temperature. These results agree with earlier results on the Tc=90 K phase of YBa2Cu3O7-. The data for nonzero applied fields were analyzed by using Ginzburg-Landau theory in the London limit for a uniaxially symmetric superconductor.

Original language	English (US)
Pages (from-to)	13073-13079
Number of pages	7
Journal	Physical Review B
Volume	43
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.43.13073
State	Published - 1991

ASJC Scopus subject areas

Condensed Matter Physics

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title = "Low-temperature specific heat of polycrystalline YBa2Cu3O6.70 in applied magnetic fields of 0, 1, 2, and 3 T",

abstract = "We have measured the specific heat of sintered YBa2Cu3O6.70 powder between 1.85 and 77 K in zero magnetic field, and between 1.75 and 9.5 K in applied fields up to 3 T. The sample was characterized by x-ray diffraction, scanning electron microscopy, iodometric titration, and magnetic susceptibility. The onset of the diamagnetic transition to the superconducting state occurred at Tc=67 K. For the specific heat in nonzero applied magnetic field, there is an increase in the magnitude of the term that is linear in temperature, and a decrease in the term that is cubic in temperature. These results agree with earlier results on the Tc=90 K phase of YBa2Cu3O7-. The data for nonzero applied fields were analyzed by using Ginzburg-Landau theory in the London limit for a uniaxially symmetric superconductor.",

author = "Stupp, {S. E.} and Friedmann, {T. A.} and Rice, {J. P.} and Schweinfurth, {R. A.} and {Van Harlingen}, {D. J.} and Ginsberg, {D. M.}",

year = "1991",

doi = "10.1103/PhysRevB.43.13073",

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journal = "Physical Review B",

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AU - Stupp, S. E.

AU - Friedmann, T. A.

AU - Rice, J. P.

AU - Schweinfurth, R. A.

AU - Van Harlingen, D. J.

AU - Ginsberg, D. M.

PY - 1991

Y1 - 1991

N2 - We have measured the specific heat of sintered YBa2Cu3O6.70 powder between 1.85 and 77 K in zero magnetic field, and between 1.75 and 9.5 K in applied fields up to 3 T. The sample was characterized by x-ray diffraction, scanning electron microscopy, iodometric titration, and magnetic susceptibility. The onset of the diamagnetic transition to the superconducting state occurred at Tc=67 K. For the specific heat in nonzero applied magnetic field, there is an increase in the magnitude of the term that is linear in temperature, and a decrease in the term that is cubic in temperature. These results agree with earlier results on the Tc=90 K phase of YBa2Cu3O7-. The data for nonzero applied fields were analyzed by using Ginzburg-Landau theory in the London limit for a uniaxially symmetric superconductor.

AB - We have measured the specific heat of sintered YBa2Cu3O6.70 powder between 1.85 and 77 K in zero magnetic field, and between 1.75 and 9.5 K in applied fields up to 3 T. The sample was characterized by x-ray diffraction, scanning electron microscopy, iodometric titration, and magnetic susceptibility. The onset of the diamagnetic transition to the superconducting state occurred at Tc=67 K. For the specific heat in nonzero applied magnetic field, there is an increase in the magnitude of the term that is linear in temperature, and a decrease in the term that is cubic in temperature. These results agree with earlier results on the Tc=90 K phase of YBa2Cu3O7-. The data for nonzero applied fields were analyzed by using Ginzburg-Landau theory in the London limit for a uniaxially symmetric superconductor.

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Low-temperature specific heat of polycrystalline YBa2Cu3O6.70 in applied magnetic fields of 0, 1, 2, and 3 T

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