Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Pellegrino, Francesco M. D."'
In this work, we investigate the local effects of a single short-range impurity on the electron system of a short ballistic graphene Josephson Junction. Within the Dirac-Bogoliubov-De Gennes approach, we systematically analyze the local density state
Externí odkaz:
http://arxiv.org/abs/2407.20940
Publikováno v:
Appl. Phys. Lett. 122, 253102 (2023)
We investigate the second spectrum of charge carrier density fluctuations in graphene within the McWorther model, where noise is induced by electron traps in the substrate. Within this simple picture, we obtain a closed-form expression including both
Externí odkaz:
http://arxiv.org/abs/2305.07628
Autor:
Mercurio, Alberto, Andolina, Gian Marcello, Pellegrino, Francesco M. D., Di Stefano, Omar, Jarillo-Herrero, Pablo, Felser, Claudia, Koppens, Frank H. L., Savasta, Salvatore, Polini, Marco
Publikováno v:
Phys. Rev. Research 6, 013303 (2024)
We introduce a gauge-invariant model of planar, square molecules coupled to a quantized spatially-varying cavity electromagnetic vector potential A(r). Specifically, we choose a temporally chiral cavity hosting a uniform magnetic field B, as this is
Externí odkaz:
http://arxiv.org/abs/2302.09964
Publikováno v:
Commun. Phys. 5, 265 (2022)
We study the effect of a dilute homogeneous spatial distribution of non-magnetic impurities on the equilibrium supercurrent sustained by a ballistic graphene Josephson junction in the short junction limit. Within the Dirac-Bogoliubov-de Gennes approa
Externí odkaz:
http://arxiv.org/abs/2203.04017
Publikováno v:
J. Stat. Mech. 094015, 2019 (2019)
Graphene-based devices show $1/f$ low-frequency noise in several electronic transport properties, such as mobility and charge carrier concentration. The recent outburst of experimental studies on graphene-based devices integrated into circuit quantum
Externí odkaz:
http://arxiv.org/abs/2011.04774
Publikováno v:
Eur. Phys. J. Spec. Top. (2021)
We investigate critical current noise in short ballistic graphene Josephson junctions in the open-circuit gate-voltage limit within the McWorther model. We find flicker noise in a wide frequency range and discuss the temperature dependence of the noi
Externí odkaz:
http://arxiv.org/abs/2011.04375
Publikováno v:
Commun. Phys. 3, 6 (2020)
Short ballistic graphene Josephson junctions sustain superconducting current with a non-sinusoidal current-phase relation up to a critical current threshold. The current-phase relation, arising from proximitized superconductivity, is gate-voltage tun
Externí odkaz:
http://arxiv.org/abs/1909.06246
Publikováno v:
Phys. Rev. B 99, 041407 (2019)
We propose a protocol to identify spatial hallmarks of viscous electron flow in graphene and other two-dimensional viscous electron fluids. We predict that the profile of the magnetic field generated by hydrodynamic electron currents flowing in confi
Externí odkaz:
http://arxiv.org/abs/1810.07573
Autor:
Braem, Beat A, Pellegrino, Francesco M D, Principi, Alessandro, Röösli, Marc, Gold, Carolin, Hennel, Szymon, Koski, Jonne V, Berl, Matthias, Dietsche, Werner, Wegscheider, Werner, Polini, Marco, Ihn, Thomas, Ensslin, Klaus
Publikováno v:
Phys. Rev. B 98, 241304 (2018)
We measure transport through a Ga[Al]As heterostructure at temperatures between 0.1 K and 30 K. Increasing the temperature enhances the electron-electron scattering rate and viscous effects in the two-dimensional electron gas arise. To probe this reg
Externí odkaz:
http://arxiv.org/abs/1807.03177
Publikováno v:
Phys. Rev. B 96, 195401 (2017)
In a fluid subject to a magnetic field the viscous stress tensor has a dissipationless antisymmetric component controlled by the so-called Hall viscosity. We here propose an all-electrical scheme that allows a determination of the Hall viscosity of a
Externí odkaz:
http://arxiv.org/abs/1706.08363