From the 1 of 9 linked papers with an AI index.
9 papers
Scanning Gate Microscopy Modulation of Supercurrent in Graphene Josephson Junctions
Ivan Villani, Samuele Fracassi, Niccolò Traverso Ziani +9
The paper uses scanning gate microscopy to locally modulate and map the supercurrent in hBN‑encapsulated graphene Josephson junctions with niobium contacts, analyzing how tip volta…
Graphene Josephson diodes from inherent asymmetric disorder
Ivan Villani, Luca Chirolli, Matteo Carrega +10
Josephson diodes are non-reciprocal superconducting devices characterized by different switching currents depending on the current flow direction. They recently attracted considera…
Intrinsic and Tunable Superconducting Diode Effect in Quantum Spin Hall Systems
Samuele Fracassi, Simone Traverso, Stefan Heun +3
Nonreciprocal dissipationless transport has long been sought for applications in superconducting technologies. Recently, it has been implemented by the so called superconducting di…
Covariant field theory of 3D massive fractons
Erica Bertolini, Matteo Carrega, Nicola Maggiore +1
We construct a covariant and gauge-invariant theory describing massive fractons in three spacetime dimensions, based on a symmetric rank-2 tensor field. The model includes a Chern-…
Vortex Pinning in Niobium covered by a thin polycrystalline Gold
Wenbin Li, Ivan Villani, Ylea Vlamidis +11
Owing to its superconducting properties, Niobium (Nb) is an excellent candidate material for superconducting electronics and applications in quantum technology. Here we perform sca…
Quasi--periodic supercurrent at quantum Hall transitions
Ivan Villani, Matteo Carrega, Alessandro Crippa +9
The combination of superconductivity and quantum Hall (QH) effect is regarded as a key milestone in advancing topological quantum computation in solid-state systems. Recent quantum…