Low temperature point contact spectroscopy and transport measurements on filled skutterudite compounds
| Autor: | Paola Romano, Antonio Leo, Jian Zhang, Gaia Grimaldi, Angela Nigro, Lei Shu, Filippo Giubileo, Francesco Avitabile |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Superconductivity
Materials science Condensed matter physics Tunneling Transition temperature 02 engineering and technology Electron engineering.material 021001 nanoscience & nanotechnology Electrical Resistance Measurements 01 natural sciences Temperature measurement Ion Superconducting Materials Electrical resistance and conductance 0103 physical sciences engineering Skutterudite 010306 general physics 0210 nano-technology Spectroscopy |
| Popis: | Several members of the RPt 4 Ge 12 skutterudites class (R = Sr, Ba, Th, La, Pr) show at low temperature the phenomenon of superconductivity, with R = Pr exhibiting the highest transition temperature of about 8 K. PrPt 4 Ge 12 shows as well a wide variety of strongly correlated electron behavior, including metal-insulator transitions, spin fluctuations, and various magnetically ordered states. In this work, we have applied the point contact spectroscopy to investigate the superconducting order parameter of the PrPt 4 Ge 12 compound. Superconductivity in PrPt 4 Ge 12 is progressively suppressed by partially substituting the Pr ions with Ce ions. For this reason, electrical resistance measurements as a function of the temperature (R-T), in different applied magnetic fields have also been performed and analysed on Pr 1-x Ce x Pt 4 Ge 12 samples for x = 0, 0.07, 0.10. |
| Databáze: | OpenAIRE |
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