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RESEARCH PRODUCT
Tunneling and point contact investigations of La1.85Sr0.15CuO4
Rudolf FeilePaul LeidererBurkhard RenkerD. Ewertsubject
Josephson effectSuperconductivityHigh-temperature superconductivityMaterials scienceCondensed matter physicsBand gapSupercurrentCondensed Matter PhysicsElectronic Optical and Magnetic Materialslaw.inventionTunnel effectlawGeneral Materials Scienceddc:530Critical fieldQuantum tunnellingdescription
The high-T c superconductor La1.85Sr0.15CuO4 was investigated by means of point contact and tunneling measurements on small-sized contacts. We find different values for the energy gap at different points of the samples. The ratio 2Delta/k B T c ranges from about 3 to 6. For some point contacts we observe a clear signature of a supercurrent. Data for the temperature dependence of the critical current are presented.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1987-03-01 |