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

• Authors: K. Nenkov , B. Idzikowski , S. Ilkovic , E. Kačmarčiková , M. Reiffers , K. Müller
• Languages of publication: EN

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.

Keywords

EN

71.20.Eh; 72.15.Eb; 73.23.Ad; 73.40.Jn

Discipline

• 73.23.Ad: Ballistic transport
• 71.20.Eh: Rare earth metals and alloys
• 73.40.Jn: Metal-to-metal contacts
• 72.15.Eb: Electrical and thermal conduction in crystalline metals and alloys

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 5
• Pages: 843-846

Dates

published

2000-05

Contributors

author

K. Nenkov

• 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

B. Idzikowski

• 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

S. Ilkovic

• Faculty of Sciences, University of Presov 17. novembra 1, 080 78 Presov, Slovakia

author

E. Kačmarčiková

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 043 53 Košice, Slovakia

author

M. Reiffers

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 043 53 Košice, Slovakia

author

K. Müller

• Institut für Festkörper- und Werkstofforschung Dresden, P.O. Box 270016, 01171 Dresden, Germany

Identifiers

DOI

10.12693/APhysPolA.97.843