Angela NIGRO | Pubblicazioni
Angela NIGRO Pubblicazioni
| 1997 | |
| Articolo in rivista | |
| We have produced Bi2Sr2CaCu2O8+delta/Bi2Sr2YCu2O8+delta/Bi2Sr2CaCu2O8+delta heterostructures using a high pressure de sputtering technique. The films have been deposited in situ at high oxygen pressure on (001) SrTiO3 substrates. X-ray diffraction and high resolution transmission electron microscopy (HRTEM) showed highly c-axis oriented trilayers. TEM analysis showed sharp interlaces between the superconducting films and the barrier, without intermediate amorphous regions. The Bi2Sr2CaCu2O8+delta layers had superconducting transition temperatures of 87 K, with Delta T-c less than or equal to 1 K, while the barrier layers showed a semiconductor-like behavior explained in terms of variable range hopping process, At low temperatures the conductance versus voltage characteristics exhibit peaks indicative of gap-like structures at about +/-30 mV, finite conductances at zero bias and flat backgrounds for energies higher than 30 mV. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY. Vol. 7. Pag.2848-2851 ISSN:1051-8223. | |
| Cucolo, Anna Maria; R., Dileo; Nigro, Angela; Romano, Paola; E., Bacca; W., Lopera; Gomez, M. E.; P., Prieto | |
| Digital Object Identifier (DOI): 10.1109/77.621879 Codice identificativo ISI: WOS:A1997XH86700140 Codice identificativo SCOPUS: 2-s2.0-0031168006 | |
| Visualizza sul Database dei Prodotti (IRIS) |
| 1997 | |
| Articolo in rivista | |
| Epitaxial growth and tunneling properties of YBa2Cu3O7-x/PrBa2Cu3O7-x/YBa2Cu3O7-x trilayer structures PHYSICA. C, SUPERCONDUCTIVITY. Vol. 282. Pag.709-710 ISSN:0921-4534. | |
| E., Baca; W., Lopera; M. E., Gomez; J., Heiras; P., Prieto; R., Dileo; Bobba, Fabrizio; Nigro, Angela; P., Romano; Cucolo, Anna Maria | |
| Versione online | |
| Digital Object Identifier (DOI): 10.1016/s0921-4534(97)00517-0 Codice identificativo ISI: WOS:A1997XZ90500136 Codice identificativo SCOPUS: 2-s2.0-0031212033 | |
| Visualizza sul Database dei Prodotti (IRIS) |
| 1997 | |
| Articolo in rivista | |
| Growth and characterization of high-T-c based heterostructures NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA. D CONDENSED MATTER, ATOMIC, MOLECULAR AND CHEMICAL PHYSICS, BIOPHYSICS. Vol. 19. Pag.1145-1150 ISSN:0392-6737. | |
| Bobba, Fabrizio; E., Bacca; Cucolo, Anna Maria; R., Dileo; Nigro, Angela; P., Prieto; P., Romano | |
| Versione online | |
| Codice identificativo ISI: WOS:A1997YE56300021 Codice identificativo SCOPUS: 2-s2.0-33749531783 | |
| Visualizza sul Database dei Prodotti (IRIS) |
