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EnglishProximity-effect and resistance magneto-fluctuation measurements in submicron Nd 1.2Ba 1.8Cu 3O z (NBCO) nano-loops are reported to investigate coherent charge transport in the non-superconducting state. We find an unexpected inhibition of Cooper pair transport, and a destruction of the induced superconductivity, by lowering the temperature from 6 K to 250 mK. This effect is accompanied by a significant change in the conductance-voltage characteristics and the zero bias conductance response to the magnetic field, pointing to the activation of a strong pair-breaking mechanism at lower temperature. The data are discussed in the framework of mesoscopic effects specific to superconducting nanostructures, proximity effect and high temperature superconductivity
| Titolo: | Coherent transport in extremely underdoped Nd1.2Ba1.8Cu3Oz nanostructures |
| Autori: | |
| Data di pubblicazione: | 2012 |
| Rivista: | |
| Abstract: | Proximity-effect and resistance magneto-fluctuation measurements in submicron Nd 1.2Ba 1.8Cu 3O z (NBCO) nano-loops are reported to investigate coherent charge transport in the non-superconducting state. We find an unexpected inhibition of Cooper pair transport, and a destruction of the induced superconductivity, by lowering the temperature from 6 K to 250 mK. This effect is accompanied by a significant change in the conductance-voltage characteristics and the zero bias conductance response to the magnetic field, pointing to the activation of a strong pair-breaking mechanism at lower temperature. The data are discussed in the framework of mesoscopic effects specific to superconducting nanostructures, proximity effect and high temperature superconductivity |
| Handle: | http://hdl.handle.net/11384/7305 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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