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2000 | 97 | 5 | 843-846
Article title

Electron Transport and Point Contact Spectroscopy of Cubic DyCu_{5}

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Abstracts
EN
The electron transport properties and point contact spectra of melt-spun DyCu_{5} with the cubic phase (structure type AuBe_{5}, space group $F\overline{4}3m$) were investigated. It was found by ac-susceptibility measurements that below a transition temperature T_{m}=6.5 K this phase shows metamagnetism. Between T_{m} and T_{C}=14.5 K a spontaneous magnetization is found. Our measurements of electrical resistivity confirm the existence of two magnetic phase transitions in the compound. Furthermore, we present point contact spectra of DyCu_{5}-Cu heterocontacts which are directly proportional to the electron-quasiparticle interaction function. Apart from a peak at about 18 meV, which is characteristic of electron-phonon interaction in pure Cu, we observed a series of additional maxima at lower energy, which are connected with the allowed 4f-transitions from the ground state to excited crystalline electric field levels.
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Contributors
author
  • Institut für Festkörper- und Werkstofforschung Dresden, P.O. Box 270016, 01171 Dresden, Germany
  • International Laboratory of High Magnetic Fields, Gajowicka 95, 53-421 Wrocław, Poland
author
  • Institut für Festkörper- und Werkstofforschung Dresden, P.O. Box 270016, 01171 Dresden, Germany
  • Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland
author
  • Faculty of Sciences, University of Presov 17. novembra 1, 080 78 Presov, Slovakia
  • Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 043 53 Košice, Slovakia
author
  • Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 043 53 Košice, Slovakia
author
  • Institut für Festkörper- und Werkstofforschung Dresden, P.O. Box 270016, 01171 Dresden, Germany
References
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Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv97z528kz
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