Multiple phase transitions in Ce(Rh,Ir,Co)In5

被引：88

作者：

Pagliuso, PG ^{[1
]}

Movshovich, R ^{[1
]}

Bianchi, AD ^{[1
]}

Nicklas, M ^{[1
]}

Moreno, NO ^{[1
]}

Thompson, JD ^{[1
]}

Hundley, MF ^{[1
]}

Sarrao, JL ^{[1
]}

Fisk, Z ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 312卷

关键词：

heavy-fermion superconductivity; antiferromagentism; coexistence;

D O I：

10.1016/S0921-4526(01)01281-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Magnetic susceptibility, electrical resistivity and heat capacity data for single crystals of Ce(Rh,Ir)(1-x)(Co,Ir)(x)In-5 (0less than or equal toxless than or equal to1) have allowed us to construct a detailed phase diagram for this new family of heavy-fermion superconductors. CeRh1-xIrx-In-5 displays superconductivity(SC) (T-c less than or similar to 1 K) over a wide range of composition, which develops out of and coexists (0.30less than or similar toxless than or similar to0.5) with a magnetically ordered state, with T(N)similar to4K. For CeCo1-xRhx-Ins(5) the superconducting state (T-c similar to 2.3 K for x=0) becomes a magnetic state (T-N similar to 4 K, for x=1) with two phase transitions observed for 0.40less than or similar toxless than or similar to0.25. CeCo1-xIrxIn5 also shows two transitions for 0.30<x<0.75. For those alloys in which SC is found, a roughly linear relationship between Tc and the lattice parameter ratio c/a, was found, with composition as the implicit parameter. The interplay between magnetism and SC for CeRh1-x(Ir,Co)(x)In-5 and the possibility of two distinct superconducting states in CeCo(1-x)Ir(x)In55 are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：129 / 131

页数：3

共 8 条

[1]

Heffner R. H., 1996, Comments on Condensed Matter Physics, V17, P361

[2] Pressure-induced superconductivity in quasi-2D CeRhIn5 [J].