Ultrasound studies of the high-Tc superconductor La1.85Sr0.15CuO4

D. J. Bishop; P. L. Gammel; A. P. Ramirez; Robert Joseph Cava; B. Batlogg; E. A. Rietman

doi:10.1103/PhysRevB.35.8788

Ultrasound studies of the high-Tc superconductor La1.85Sr0.15CuO4

D. J. Bishop, P. L. Gammel, A. P. Ramirez, Robert Joseph Cava, B. Batlogg, E. A. Rietman

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Abstract

Sound-velocity, attenuation and thermal-expansion measurements are reported on La1.85Sr0.15CuO4. From room temperature to just above Tc the sound velocity is found to soften significantly as the temperature is reduced. At Tc there is a drop of 150 ppm in accord with the thermodynamics of the superconducting transition, and below Tc, as the gap opens, there is a large increase in the sound velocity. The magnitudes of these effects are anomalously large.

Original language	English (US)
Pages (from-to)	8788-8790
Number of pages	3
Journal	Physical Review B
Volume	35
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.35.8788
State	Published - Jan 1 1987
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1103/PhysRevB.35.8788

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abstract = "Sound-velocity, attenuation and thermal-expansion measurements are reported on La1.85Sr0.15CuO4. From room temperature to just above Tc the sound velocity is found to soften significantly as the temperature is reduced. At Tc there is a drop of 150 ppm in accord with the thermodynamics of the superconducting transition, and below Tc, as the gap opens, there is a large increase in the sound velocity. The magnitudes of these effects are anomalously large.",

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AU - Bishop, D. J.

AU - Gammel, P. L.

AU - Ramirez, A. P.

AU - Cava, Robert Joseph

AU - Batlogg, B.

AU - Rietman, E. A.

PY - 1987/1/1

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N2 - Sound-velocity, attenuation and thermal-expansion measurements are reported on La1.85Sr0.15CuO4. From room temperature to just above Tc the sound velocity is found to soften significantly as the temperature is reduced. At Tc there is a drop of 150 ppm in accord with the thermodynamics of the superconducting transition, and below Tc, as the gap opens, there is a large increase in the sound velocity. The magnitudes of these effects are anomalously large.

AB - Sound-velocity, attenuation and thermal-expansion measurements are reported on La1.85Sr0.15CuO4. From room temperature to just above Tc the sound velocity is found to soften significantly as the temperature is reduced. At Tc there is a drop of 150 ppm in accord with the thermodynamics of the superconducting transition, and below Tc, as the gap opens, there is a large increase in the sound velocity. The magnitudes of these effects are anomalously large.

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Ultrasound studies of the high-Tc superconductor La1.85Sr0.15CuO4

Abstract

All Science Journal Classification (ASJC) codes

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