Symmetry and temperature dependence of the order parameter in (formula presented) from point contact measurements

A. Kohen; G. Deutscher

doi:10.1103/PhysRevB.64.060506

Symmetry and temperature dependence of the order parameter in (formula presented) from point contact measurements

A. Kohen, G. Deutscher

School of Physics and Astronomy

Tel Aviv University

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

Abstract

We have performed differential conductance versus voltage measurements of (formula presented) point contacts. We find that the dominant component in the conductance is due to Andreev reflection. The results are fitted to the theoretical model of BTK for an s-wave symmetry from which we extract the value of the order parameter (Δ) and its temperature dependence. From our results we also obtain a lower experimental bound on the Fermi velocity in (formula presented)

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	64
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.64.060506
State	Published - 2001

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title = "Symmetry and temperature dependence of the order parameter in (formula presented) from point contact measurements",

abstract = "We have performed differential conductance versus voltage measurements of (formula presented) point contacts. We find that the dominant component in the conductance is due to Andreev reflection. The results are fitted to the theoretical model of BTK for an s-wave symmetry from which we extract the value of the order parameter (Δ) and its temperature dependence. From our results we also obtain a lower experimental bound on the Fermi velocity in (formula presented)",

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AB - We have performed differential conductance versus voltage measurements of (formula presented) point contacts. We find that the dominant component in the conductance is due to Andreev reflection. The results are fitted to the theoretical model of BTK for an s-wave symmetry from which we extract the value of the order parameter (Δ) and its temperature dependence. From our results we also obtain a lower experimental bound on the Fermi velocity in (formula presented)

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Symmetry and temperature dependence of the order parameter in (formula presented) from point contact measurements

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