Evidence for superconductivity and a pseudogap in the new magnetic compound PrAg6In6

Автор(и)

  • V.M. Dmitriev Grenoble High Magnetic Field Laboratory, Max-Planck-Institut fьr Festkцrperforschung and Centre National de la Recherche Scientifique, B.P. 166, F-38042 Grenoble Cedex 9, France
  • L.F. Rybaltchenko Grenoble High Magnetic Field Laboratory, Max-Planck-Institut fьr Festkцrperforschung and Centre National de la Recherche Scientifique, B.P. 166, F-38042 Grenoble Cedex 9, France
  • P. Wyder Grenoble High Magnetic Field Laboratory, Max-Planck-Institut fьr Festkцrperforschung and Centre National de la Recherche Scientifique, B.P. 166, F-38042 Grenoble Cedex 9, France
  • A.G.M. Jansen Grenoble High Magnetic Field Laboratory, Max-Planck-Institut fьr Festkцrperforschung and Centre National de la Recherche Scientifique, B.P. 166, F-38042 Grenoble Cedex 9, France
  • N.N. Prentslau B. Verkin Institute for Low Temperature Physics and Engineering of the National Akademy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • W. Suski International Laboratory of High Magnetic Fields and Low Temperatures, 53-421 Wroclaw, Poland

DOI:

https://doi.org/10.1063/1.1820362

Ключові слова:

PACS: 74.70.Ad, 74.80.Fp

Анотація

Direct evidence for superconductivity in the new magnetic compound PrAg6In6 is revealed for the first time. The distinct Andreev-reflection current is observed in metallic point contacts (PC) based on this compound. The data obtained provide reason enough to suggest that the rise of superconductivity strongly depends on the local magnetic order varying over the sample volume. The triangular-shaped PC spectra (dV/dI(V)) in the vicinity of the zero-bias voltage suggest an unconventional type of superconducting pairing. As follows from the temperature and magnetic field dependences of the PC spectra, the superconducting energy gap structure transforms into the pseudogap one as the temperature or the magnetic field increases.

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Опубліковано

2004-11-18

Як цитувати

(1)
Dmitriev, V.; Rybaltchenko, L.; Wyder, P.; Jansen, A.; Prentslau, N.; Suski, W. Evidence for Superconductivity and a Pseudogap in the New Magnetic Compound PrAg6In6. Fiz. Nizk. Temp. 2004, 31, 63-67.

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Надпровідність, зокрема високотемпературна

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