ANDREEV SCATTERING IN THE ANISOTROPIC HEAVY-FERMION SUPERCONDUCTOR UPT3

被引：38

作者：

GOLL, G

BRUDER, C

VONLOHNEYSEN, H

机构：

[1] UNIV KARLSRUHE,INST THEORET FESTKORPERPHYS,D-76128 KARLSRUHE,GERMANY

[2] UNIV KARLSRUHE,INST PHYS,D-76128 KARLSRUHE,GERMANY

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.52.6801

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Andreev reflection between a normal metal and a superconductor was employed to investigate the superconducting order parameter of the heavy-fermion superconductor UPt3. In the present work, point-contact spectra are compared with dV/dI curves calculated assuming different order-parameter symmetries, and that the electrons are injected preferentially in the forward direction with an angular spread described by a cone. Various order-parameter structures are compared for nonideal interfaces of d-wave superconductors and different directions of current flow. The analysis favors a two-dimensional order parameter with an orbital part with a, line of nodes in the basal plane and point nodes along the c axis.

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页码：6801 / 6807

页数：7

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