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2008 | 114 | 1 | 83-90
Article title

Superconductivity and Magnetism of Dy_{1-x}Y_xRh_4B_4: Candidate for Spin-Triplet Cooper Pairing

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EN
Abstracts
EN
In this work for the first time we give the evidence that compound Dy_{1-x}Y_x Rh_4B_4 with the tetragonal body-centered crystal structure LuRu_4B_4 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_4B_4 the value and temperature and field dependences of superconducting gap parameter∆(T, H) in Dy_{0.8}Y_{0.2}Rh_4B_4 were determined. The value of the ratio 2∆(0)/kT_C is about 4. Some unusual features of∆(T, H) dependences were observed, which give the evidence that the Dy_{1-x}Y_xRh_4B_4 is a candidate for spin-triplet Cooper pairing of charges with the parallel spins.
Keywords
EN
Publisher

Year
Volume
114
Issue
1
Pages
83-90
Physical description
Dates
published
2008-07
received
2007-11-06
Contributors
author
  • International Laboratory of High Magnetic Fields and Low Temperatures, Wrocław, Poland
  • B. Verkin Institute for Low Temperature Physics and Engin., of the NAS of Ukraine, Kharkov, Ukraine
author
  • Institute of Low Temperature and Structure Research, PAS, Wrocław, Poland
author
  • International Laboratory of High Magnetic Fields and Low Temperatures, Wrocław, Poland
  • Institute for High Pressure Physics, RAS, Troitsk, Russia
  • B. Verkin Institute for Low Temperature Physics and Engin., of the NAS of Ukraine, Kharkov, Ukraine
author
  • B. Verkin Institute for Low Temperature Physics and Engin., of the NAS of Ukraine, Kharkov, Ukraine
author
  • B. Verkin Institute for Low Temperature Physics and Engin., of the NAS of Ukraine, Kharkov, Ukraine
author
  • B. Verkin Institute for Low Temperature Physics and Engin., of the NAS of Ukraine, Kharkov, Ukraine
References
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  • 2. B.T. Matthias, H. Suhl, E. Corenzwit, Phys. Rev. Lett. 1, 449 (1958)
  • 3. M.B. Maple,O. Fischer, Superconductivity in Ternary Compounds II, Superconductivity and Magnetism, Springer-Verlag, Berlin 1982
  • 4. A.J. Zaleski, A.V. Tswyashchenko, E.P. Khlybov, L.N. Fomichova, I.E. Kostyleva, S.A. Lachenkov, O.G. Zamolodchikov, in: Proc. 24th Int. Conf. on Low Temperature Physics, Orlando, Florida, USA, 2005, p. 691
  • 5. L. Néel, Ann. Phys. 3, 137 (1948)
  • 6. E.W. Gorter, Philips Research Reports 9,# 4, 295;# 5, 321;# 6, 403 (1954)
  • 7. K.P. Belov, Effects of Paraprocesses in Ferrimagnets and Aantiferromagnets, Fizmatlit, Moscow 2001, p. 80 (in Russian)
  • 8. R.M. Bozorth, S. Geller, Phys. Chem. Solids 11, 263 (1959)
  • 9. G.S. Burkhanov, Yu.K. Kovneristyi, S.A. Lachenkov, E.P. Khlybov, Dokl. Phys. 52, 530 (2007)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv114n111kz
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