ANDREEV REFLECTIONS ON HEAVY-FERMION SUPERCONDUCTORS

被引：75

作者：

DEWILDE, Y

HEIL, J

JANSEN, AGM

WYDER, P

DELTOUR, R

ASSMUS, W

MENOVSKY, A

SUN, W

TAILLEFER, L

机构：

[1] CNRS,F-38042 GRENOBLE 9,FRANCE

[2] UNIV LIBRE BRUXELLES,SERV PHYS SOLIDES,B-1050 BRUSSELS,BELGIUM

[3] UNIV FRANKFURT,INST PHYS,W-6000 FRANKFURT,GERMANY

[4] UNIV AMSTERDAM,VANDERWAALS ZEEMAN LAB,1018 XE AMSTERDAM,NETHERLANDS

[5] MCGILL UNIV,DEPT PHYS,MONTREAL H3A 2T8,QUEBEC,CANADA

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.72.2278

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In a comparative Andreev-reflection study of normal-superconductor point contacts on the c plane of UPt3, CeCu2Si2, and URu2Si2 crystals at temperatures down to T = 30 mK and in a magnetic field up to B = 10 T, differences are found in the current-voltage characteristics. The behavior of the differential resistance dV/dI(V) of UPt3 is attributed to the presence of nodes in the superconducting order parameter DELTA(k) and is compared with theoretical predictions for the symmetry of the pairing state. The data for CeCu2Si2 and URu2Si2 point to the absence of zeros in DELTA(k).

引用

页码：2278 / 2281

页数：4

共 22 条

[1] TRANSITION FROM METALLIC TO TUNNELING REGIMES IN SUPERCONDUCTING MICRO-CONSTRICTIONS - EXCESS CURRENT, CHARGE IMBALANCE, AND SUPER-CURRENT CONVERSION [J].