Superconductivity and anomalous normal state in the CePd2Si2/CeNi2Ge2 system
| Autor: | Stephen Julian, S. J. S. Lister, F. V. Carter, Siddharth S. Saxena, R. K. W. Haselwimmer, F. M. Grosche, Gilbert G. Lonzarich, Neil D. Mathur |
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| Rok vydání: | 1997 |
| Předmět: |
Quantum phase transition
Superconductivity Physics Condensed matter physics Hydrostatic pressure Thermodynamics Condensed Matter Physics Electronic Optical and Magnetic Materials Metal Electrical resistivity and conductivity visual_art visual_art.visual_art_medium Fermi liquid theory Electrical and Electronic Engineering Ambient pressure Phase diagram |
| Zdroj: | Physica B: Condensed Matter. 239:62-66 |
| ISSN: | 0921-4526 |
| DOI: | 10.1016/s0921-4526(97)00379-7 |
| Popis: | The unconventional nonmagnetic metal CeNi 2 Ge 2 is characterised at ambient pressure by temperature dependences of the specific heat and of the resistivity which deviate strongly from standard Fermi-liquid predictions and are reminiscent of the behaviour observed in its sibling system CePd 2 Si 2 above the critical pressure at which magnetic order is suppressed. We have explored the CePd 2 Si 2 /CeNi 2 Ge 2 phase diagram in a series of resistivity measurements under high hydrostatic pressure, p . At p > 15 kbar, a new superconducting transition appears below 220 mK in CeNi 2 Ge 2 and shifts to higher temperatures with increasing pressure, reaching ≈400 mK at p ≈ 26 kbar. |
| Databáze: | OpenAIRE |
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