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.
引用
收藏
页码：6801 / 6807
页数：7
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