Superconductivity and magnetism of Dy1-xYxRh4B4:: Candidate for spin-triplet cooper pairing

被引：13

作者：

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

Zaleski, A. J. ^{[3
]}

Khlybov, E. P. ^{[1
,4
]}

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

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

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

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

机构：

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

[2] NAS Ukraine, B Verkin Inst Low Temp Phys & Engin, Kharkov, Ukraine

[3] PAS, Inst Low Temp & Struct Res, Wroclaw, Poland

[4] RAS, Inst High Pressure Phys, Troitsk, Russia

来源：

ACTA PHYSICA POLONICA A | 2008年 / 114卷 / 01期

关键词：

D O I：

10.12693/APhysPolA.114.83

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this work for the first time we give the evidence that compound Dy1-xYxRh4B4 with the tetragonal body-centered crystal structure LuRu4B4 is the ferrimagnetic at temperatures T-Cur < 40 K, ferrimagnetic superconductor at T-C < 10 K and antiferromagnetic superconductor at T-N < 3 K. No reentrant behavior was found down to T = 0.32 K. For the first time by means of a method of microcontact spectroscopy of the Andreev reflection in point contact Ag-Dy(0.8)y(0.2)Rh(4)B(4) the value and temperature and field dependences of superconducting gap parameter A (T, H) in Dy(0.8)y(0.2)Rh(4)B(4) were determined. The value of the ratio 2 Delta(0)/kT(C) is about 4. Some unusual features of Delta(T,H) dependences were observed, which give the evidence that the Dy1-xYxRh4B4 is a candidate for spin-triplet Cooper pairing of charges with the parallel spins.

引用

页码：83 / 90

页数：8

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