Coherent transport in extremely underdoped Nd1.2Ba1.8Cu3Oz nanostructures

Carillo, F.; De Luca, G.M.; Montemurro, D.; Papari, G.; Salluzzo, M.; Stornaiuolo, D.; Tafuri, F.; Beltram, F

doi:10.1088/1367-2630/14/8/083025

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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

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11384/7305

Titolo:	Coherent transport in extremely underdoped Nd1.2Ba1.8Cu3Oz nanostructures
Autori interni:	CARILLO, Franco BELTRAM, Fabio
Data di pubblicazione:	2012
Rivista:	NEW JOURNAL OF PHYSICS
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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