Andreev reflections from La2-xSrxCuO4 single crystals

N. S. Achsaf; D. Goldschmidt; G. Deutscher; A. Revcolevschi; A. Vietkine

doi:10.1007/BF00768407

Andreev reflections from La_2-xSr_xCuO₄ single crystals

N. S. Achsaf^*, D. Goldschmidt, G. Deutscher, A. Revcolevschi, A. Vietkine

^*Corresponding author for this work

School of Physics and Astronomy

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

8 Scopus citations

Abstract

Andreev reflections have been studied at the interface between a gold tip and La_2-xSr_xCuO₄ (x=0.11, 0.12) single crystals, along the (110) direction. The shape of the I(V) characteristic has been analyzed within the framework of the theory of Tanaka and Kashiwaya, allowing for an anisotropic order parameter. The data cannot be fitted either to a pure isotropic s-wave or pure d-wave symmetry. The best fit is obtained for an anisotropic gap, with Δ_max=15 meV and Δ_min=5 meV.

Original language	English
Pages (from-to)	329-334
Number of pages	6
Journal	Journal of Low Temperature Physics
Volume	105
Issue number	3-4
DOIs	https://doi.org/10.1007/BF00768407
State	Published - 1996

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title = "Andreev reflections from La2-xSrxCuO4 single crystals",

abstract = "Andreev reflections have been studied at the interface between a gold tip and La2-xSrxCuO4 (x=0.11, 0.12) single crystals, along the (110) direction. The shape of the I(V) characteristic has been analyzed within the framework of the theory of Tanaka and Kashiwaya, allowing for an anisotropic order parameter. The data cannot be fitted either to a pure isotropic s-wave or pure d-wave symmetry. The best fit is obtained for an anisotropic gap, with Δmax=15 meV and Δmin=5 meV.",

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AU - Achsaf, N. S.

AU - Goldschmidt, D.

AU - Deutscher, G.

AU - Revcolevschi, A.

AU - Vietkine, A.

PY - 1996

Y1 - 1996

N2 - Andreev reflections have been studied at the interface between a gold tip and La2-xSrxCuO4 (x=0.11, 0.12) single crystals, along the (110) direction. The shape of the I(V) characteristic has been analyzed within the framework of the theory of Tanaka and Kashiwaya, allowing for an anisotropic order parameter. The data cannot be fitted either to a pure isotropic s-wave or pure d-wave symmetry. The best fit is obtained for an anisotropic gap, with Δmax=15 meV and Δmin=5 meV.

AB - Andreev reflections have been studied at the interface between a gold tip and La2-xSrxCuO4 (x=0.11, 0.12) single crystals, along the (110) direction. The shape of the I(V) characteristic has been analyzed within the framework of the theory of Tanaka and Kashiwaya, allowing for an anisotropic order parameter. The data cannot be fitted either to a pure isotropic s-wave or pure d-wave symmetry. The best fit is obtained for an anisotropic gap, with Δmax=15 meV and Δmin=5 meV.

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IS - 3-4

ER -

Andreev reflections from La_2-xSr_xCuO₄ single crystals

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