Thermal Expansion of La1.85Sr0.15CuO4 in Magnetic Fields up to 14 Tesla

D. Bruns; B. Büchner; R. Gross; T. Lorenz; S. Uchida

doi:10.1023/a:1022558120245

Thermal Expansion of La_1.85Sr_0.15CuO₄ in Magnetic Fields up to 14 Tesla

D. Bruns, B. Büchner, R. Gross, T. Lorenz, S. Uchida

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Abstract

We present thermal expansion measurements on a La_1.85Sr_0.15Cuo₄ single crystal in external magnetic fields. Clear anomalies of the thermal expansion are observed at the superconducting transition. We have studied in detail the anisotropic influence of external fields on the anomalies. As expected, the field dependence is maximum for B ∥ c and minimum for B ⊥ c. The measured angular dependence corresponds to that of an anisotropic 3d superconductor with an anisotropy parameter γ ≃ 18.

Original language	English
Pages (from-to)	1453-1457
Number of pages	5
Journal	Journal of Low Temperature Physics
Volume	117
Issue number	5-6
DOIs	https://doi.org/10.1023/a:1022558120245
State	Published - 1999
Externally published	Yes

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abstract = "We present thermal expansion measurements on a La1.85Sr0.15Cuo4 single crystal in external magnetic fields. Clear anomalies of the thermal expansion are observed at the superconducting transition. We have studied in detail the anisotropic influence of external fields on the anomalies. As expected, the field dependence is maximum for B ∥ c and minimum for B ⊥ c. The measured angular dependence corresponds to that of an anisotropic 3d superconductor with an anisotropy parameter γ ≃ 18.",

author = "D. Bruns and B. B{\"u}chner and R. Gross and T. Lorenz and S. Uchida",

year = "1999",

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AU - Bruns, D.

AU - Büchner, B.

AU - Gross, R.

AU - Lorenz, T.

AU - Uchida, S.

PY - 1999

Y1 - 1999

N2 - We present thermal expansion measurements on a La1.85Sr0.15Cuo4 single crystal in external magnetic fields. Clear anomalies of the thermal expansion are observed at the superconducting transition. We have studied in detail the anisotropic influence of external fields on the anomalies. As expected, the field dependence is maximum for B ∥ c and minimum for B ⊥ c. The measured angular dependence corresponds to that of an anisotropic 3d superconductor with an anisotropy parameter γ ≃ 18.

AB - We present thermal expansion measurements on a La1.85Sr0.15Cuo4 single crystal in external magnetic fields. Clear anomalies of the thermal expansion are observed at the superconducting transition. We have studied in detail the anisotropic influence of external fields on the anomalies. As expected, the field dependence is maximum for B ∥ c and minimum for B ⊥ c. The measured angular dependence corresponds to that of an anisotropic 3d superconductor with an anisotropy parameter γ ≃ 18.

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ER -

Thermal Expansion of La_1.85Sr_0.15CuO₄ in Magnetic Fields up to 14 Tesla

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