Superconductivity of quench-condensed beryllium and beryllium-germanium films
| Autor: | S. Ewert, H. Wühl, Albert Comberg |
|---|---|
| Rok vydání: | 1975 |
| Předmět: |
Superconductivity
Materials science Condensed matter physics Phonon chemistry.chemical_element Germanium Condensed Matter Physics Electronic Optical and Magnetic Materials Condensed Matter::Materials Science chemistry Condensed Matter::Superconductivity Metastability Phase (matter) Density of states Beryllium Helium |
| Zdroj: | Zeitschrift f�r Physik B: Condensed Matter and Quanta. 20:165-168 |
| ISSN: | 1434-6036 0340-224X |
| DOI: | 10.1007/bf01315686 |
| Popis: | Tunneling experiments on Be films condensed onto helium cooled substrates show that these films are homogeneously disordered with a uniform transition temperatureTc when Ge is codeposited, whereas thick films of pure Be do not grow homogeneously. For films of Be+10 at.% Ge a ratio 2Δ/kBTc=3.7 is found. Phonon induced structure in the tunneling density of states is not observed. The metastable phase obtained by quench-condensation is considered to be a disordered high-temperature phase of Be which transforms to the room temperature phase at about 60 K. |
| Databáze: | OpenAIRE |
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