Enhancement of the superconducting order parameter in the compound Dy0.8Y0.2Rh4B4 at the phase transition of its magnetic subsystem from the antiferromagnetic to the ferrimagnetic state

被引：6

作者：

Dmitriev, V. M. ^{[1
,2
]}

Zaleski, A. ^{[3
]}

Khlybov, E. P. ^{[4
]}

Rybaltchenko, L. F. ^{[1
,2
]}

Khristenko, E. V. ^{[1
,2
]}

Ishchenko, L. A. ^{[1
,2
]}

Terekhov, A. V. ^{[1
,2
]}

机构：

[1] Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine

[2] Int Lab High Magnet Fields & Low Temp, Wroclaw, Poland

[3] Polish Acad Sci, Inst Low Temp & Struct Res, Wroclaw, Poland

[4] Russian Acad Sci, Inst High Pressures, Troitsk, Russia

来源：

LOW TEMPERATURE PHYSICS | 2009年 / 35卷 / 05期

关键词：

antiferromagnetic materials; boron alloys; dysprosium alloys; ferrimagnetic materials; magnetic moments; magnetic superconductors; magnetic transitions; rhodium alloys; superconducting materials; superconducting transitions; yttrium alloys;

D O I：

10.1063/1.3132765

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dependence of the superconducting order parameter Delta on magnetic field H in the compound Dy0.8Y0.2Rh4B4 is investigated experimentally for the first time at temperatures both above and below the antiferromagnet-ferrimagnet phase transition in the magnetic subsystem of the compound at T-N approximate to 2.7 K. It is shown that this phase transition has a substantial influence on the charge subsystem of the superconductor and the parameter Delta. The parameter Delta turns out to be larger in the presence of the uncompensated magnetic moment of the ferrimagnetic state than in its absence in the antiferromagnetic state. In Dy0.8Y0.2Rh4B4 the charge and spin subsystems are substantially coupled, and the mechanism of superconducting pairing may be unconventional.

引用

页码：424 / 425

页数：2

共 2 条

[1] Magnetic phase transformations and superconductivity in Dy0.8Y0.2Rh4B4 [J].

Dmitriev, V. M. ;

Zaleskii, A. ;

Khlybov, E. P. ;

Rybal'chenko, L. F. ;

Khristenko, E. V. ;

Ishchenko, L. A. ;

Terekhov, A. V. ;

Kostyleva, I. E. ;

Lachenkov, S. A. .

LOW TEMPERATURE PHYSICS, 2008, 34 (11) :909-917

[2] Superconductivity and magnetism of Dy1-xYxRh4B4:: Candidate for spin-triplet cooper pairing [J].

Dmitriev, V. M. ;

Zaleski, A. J. ;

Khlybov, E. P. ;

Rybaltchenko, L. F. ;

Khristenko, E. V. ;

Ishchenko, L. A. ;

Terekhov, A. V. .

ACTA PHYSICA POLONICA A, 2008, 114 (01) :83-90

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