Theoretical proposal of a method to identify the symmetry of the order parameter in high-Tc superconductivity

Yoji Ohashi

doi:10.1143/JPSJ.64.887

Theoretical proposal of a method to identify the symmetry of the order parameter in high-T_c superconductivity

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

Abstract

A new experimental method to judge the symmetry of the order parameter in high-T_c superconductivity is proposed. The interference of reflected holes from different directions due to the Andreev reflection causes quite different phenomena among s-,d_x2-y2- and d_xy-wave superconductivity. It is shown that this interference effect may be observed as a change of the conductance below T_c, which enables us to identify the symmetry of the pairing state in high-T_c superconductivity. Various cases in which the experimental setup deviates from the ideal situation are also studied and experimental condition for this method is clarified.

Original language	English
Pages (from-to)	887-912
Number of pages	26
Journal	Journal of the Physical Society of Japan
Volume	64
Issue number	3
DOIs	https://doi.org/10.1143/JPSJ.64.887
Publication status	Published - 1995 Mar
Externally published	Yes

Keywords

Andreev reflection
High-T superconductivity
Interference effect
Symmetry of the pairing state

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.64.887

Cite this

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abstract = "A new experimental method to judge the symmetry of the order parameter in high-Tc superconductivity is proposed. The interference of reflected holes from different directions due to the Andreev reflection causes quite different phenomena among s-,dx2-y2- and dxy-wave superconductivity. It is shown that this interference effect may be observed as a change of the conductance below Tc, which enables us to identify the symmetry of the pairing state in high-Tc superconductivity. Various cases in which the experimental setup deviates from the ideal situation are also studied and experimental condition for this method is clarified.",

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AB - A new experimental method to judge the symmetry of the order parameter in high-Tc superconductivity is proposed. The interference of reflected holes from different directions due to the Andreev reflection causes quite different phenomena among s-,dx2-y2- and dxy-wave superconductivity. It is shown that this interference effect may be observed as a change of the conductance below Tc, which enables us to identify the symmetry of the pairing state in high-Tc superconductivity. Various cases in which the experimental setup deviates from the ideal situation are also studied and experimental condition for this method is clarified.

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