Zero energy states at a normal-metal/cuprate-superconductor interface probed by shot noise
O. Negri, M. Zaberchik, G. Drachuck, A. Keren, M. Reznikov
DOI 10.1103/PhysRevB.97.214504 · Physical Review B
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Abstract
We report measurements of the current noise generated in the optimally doped, x=0.15, Au-La2−xSrxCuO4 junctions. For high transmission junctions on a (110) surface, we observed a split zero-bias conductance peak (ZBCP), accompanied by enhanced shot noise. We observed no enhanced noise neither in low-transmission junctions on a (110) surface nor in any junction on a (100) surface. We attribute the enhanced noise to Cooper pair transport through the junctions.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 35 | Pressure not reported | unknown |
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