Magnetic structure of the Kondo-lattice antiferromagnet Ce2Cu2In and superconductivity in its La-analogue

被引：1

作者：

Kral, P. ^{[1
,2
]}

Klicpera, M. ^{[1
]}

Divis, M. ^{[1
]}

Havela, L. ^{[1
]}

Pomjakushin, V. ^{[3
]}

Kastil, J. ^{[2
]}

Prchal, J. ^{[1
]}

机构：

[1] Charles Univ Prague, Fac Math & Phys, Dept Condensed Matter Phys, Ke Karlovu 5, Prague 12116, Czech Republic

[2] Czech Acad Sci, Inst Phys, Slovance 1999-2, Prague 18221, Czech Republic

[3] Paul Scherrer Inst PSI, Lab Neutron Scattering & Imaging LNS, CH-5232 Villigen, Switzerland

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2025年 / 1011卷

关键词：

Ce2Cu2In; La2Cu2In; Magnetic structure; Neutron difraction; Superconductivity; BEHAVIOR; CE2T2IN; T=NI; CU;

D O I：

10.1016/j.jallcom.2025.178453

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the present work, the magnetic properties and structure of the Ce2Cu2In compound are investigated by means of specific heat and neutron diffraction measurements. Ce2Cu2In orders antiferromagnetically below TN1 = 5.7 (1) K followed by the order-to-order transition at TN2 = 4.7(1) K. The ground state magnetic structure of Ce2Cu2In is described by the propagation vector k = (0, 0, 1/2) and magnetic space group MSG 136.504 P42/ mnm.1 ' c[P4/mbm]. The magnetic moment of 1.43(6) mu B refined at T = 1.6 K is significantly lower than the free-ion Ce3+ value. The background information is provided by the analysis of the non-magnetic La counterpart, showing, in addition, superconductivity with the critical temperature Tc= 0.93 K and the critical magnetic field of 0.11 T at T = 0.38 K. The experimental results are supported by the first-principles calculations based on Density Functional Theory (DFT).

引用

页数：6

共 28 条

[1] WIEN2k: An APW+lo program for calculating the properties of solids [J].