POSSIBLE EVIDENCE FOR AN ENERGY-GAP BELOW THE NEEL TEMPERATURE IN TERNARY RARE-EARTH COMPOUNDS

被引：27

作者：

DAS, I

SAMPATHKUMARAN, EV

VIJAYARAGHAVAN, R

机构：

[1] Tata Institute of Fundamental Research, Bombay-400 005, Homi Bhabha Road

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.44.159

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electrical-resistivity (rho) behavior in the vicinity of the Neel temperature (T(N)) of the pseudoternary alloys RCu(2-x)Ni(x)Si2 (R = Pr, Gd, and Dy) and R(1-x)La(x)Cu2Si2 (R = Pr and Gd) is reported. There is an increase in rho just below T(N) in several alloys, followed by the usual decrease at lower temperatures due to the loss of spin-disorder contribution. We attribute this rise in rho to the formation of an energy gap at the Fermi surface due to antiferromagnetic ordering.

引用

页码：159 / 162

页数：4

共 15 条

[11] SUPERCONDUCTIVITY IN THE PRESENCE OF STRONG PAULI PARAMAGNETISM - CECU2SI2 [J].