Preparation and characterization of a homemade Josephson junction prepared from a thin film sintered in a domestic microwave oven

Freitas, Gustavo Quereza; Zadorosny, Rafael [UNESP]; Rafael Cena, Cícero; Silveira, João Borsil [UNESP]; Moreto, Jéferson Aparecido; Carvalho, Claudio Luiz [UNESP]

Preparation and characterization of a homemade Josephson junction prepared from a thin film sintered in a domestic microwave oven

Arquivos

S1516-14392016000200295.pdf (1.89 MB)

Data

2016-03-01

Autores

Freitas, Gustavo Quereza

Zadorosny, Rafael

Rafael Cena, Cícero

Silveira, João Borsil

Moreto, Jéferson Aparecido

Carvalho, Claudio Luiz

Tipo

Artigo

Direito de acesso

Acesso aberto

Resumo

A homemade Josephson junction was successfully obtained using a superconductor thin film of the BSCCO system. The film was deposited on a lanthanum aluminate, produced from a commercial powder with a nominal composition Bi1.8Pb0.4Sr2CaCu2Ox, was thermally treated by a domestic microwave oven. The XRD analysis of the film indicated the coexistence of Bi-2212 and Bi-2223 phases and SEM images revealed that a typical superconductor plate-like morphology was formed. From the electrical characterization, performed using DC four probes technique, it was observed an onset superconducting transition temperature measured around 81K. At the current-voltage characteristics curve, a step of electric current at zero-voltage could be observed, an indicative that the tunneling Josephson °Ccurred.