Giovanni Carapella

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We fabricate back-gated field effect transistors using niobium electrodes on mechanically exfoliated monolayer graphene and perform electrical characterization in the pressure range from atmospheric down to 10(-4) mbar. We study the effect of room temperature vacuum degassing and report asymmetric transfer characteristics with a resistance plateau in the(More)
Two-dimensional materials, such as graphene, topological insulators, and two-dimensional electron gases, represent a technological playground to develop coherent electronics. In these systems, quantum interference effects, and in particular weak localization, are likely to occur. These coherence effects are usually characterized by well-defined features in(More)
C. Cirillo,1,2 G. Carapella,1,2 M. Salvato,1,3 R. Arpaia,4 M. Caputo,1,2 and C. Attanasio1,2 1CNR-SPIN Salerno, Università degli Studi di Salerno, I-84084 Fisciano (SA), Italy 2Dipartimento di Fisica “E.R. Caianiello”, Università degli Studi di Salerno, I-84084 Fisciano (SA), Italy 3Dipartimento di Fisica Università di Roma “Tor Vergata”, I-00133 Roma,(More)
Vortices are topological defects accounting for many important effects in superconductivity, superfluidity, and magnetism. Here we address the stability of a small number of such excitations driven by strong external forces. We focus on Abrikosov-Josephson vortex that appears in lateral superconducting S/S'/S weak links with suppressed superconductivity in(More)
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