66 citations · 510 across the 24 of their papers we have counts for
15 papers · 1 filter
Bipolar Thermoelectricity in Bilayer-Graphene--Superconductor Tunnel Junctions
Lorenzo Bernazzani, Giampiero Marchegiani, Francesco Giazotto +2
We investigate the thermoelectric properties of a hybrid nanodevice composed by a 2D carbon based material and a superconductor. This system presents nonlinear bipolar thermoelectr…
Quasiparticles in superconducting qubits with asymmetric junctions
Giampiero Marchegiani, Luigi Amico, Gianluigi Catelani
Designing the spatial profile of the superconducting gap -- gap engineering -- has long been recognized as an effective way of controlling quasiparticles in superconducting devices…
Bipolar Thermoelectric Josephson Engine
Gaia Germanese, Federico Paolucci, Giampiero Marchegiani +2
Thermoelectric effects in metals are typically small due to the nearly-perfect particle-hole (PH) symmetry around their Fermi surface [1, 2]. Despite being initially considered par…
Negative differential thermal conductance by photonic transport in electronic circuits
Shobhit Saheb Dey, Giuliano Timossi, Luigi Amico +1
The negative differential thermal conductance (NDTC) provides the key mechanism for realizing thermal transistors. This exotic effect has been the object of an extensive theoretica…
Spontaneous symmetry breaking-induced thermospin effect in superconducting tunnel junctions
Gaia Germanese, Federico Paolucci, Giampiero Marchegiani +2
We discuss the charge and the spin tunneling currents between two Bardeen-Cooper-Schrieffer (BCS) superconductors, where one density of states is spin-split. In the presence of a l…
Highly efficient phase-tunable photonic thermal diode
G. Marchegiani, A. Braggio, F. Giazotto
We investigate the photon-mediated thermal transport between a superconducting electrode and a normal metal. When the quasiparticle contribution can be neglected, the photon-mediat…
Noise effects in the nonlinear thermoelectricity of a Josephson junction
G. Marchegiani, A. Braggio, F. Giazotto
We investigate the noise current in a thermally biased tunnel junction between two superconductors with different zero-temperature gaps. When the Josephson effect is suppressed, th…
Phase-tunable thermoelectricity in a Josephson junction
G. Marchegiani, A. Braggio, F. Giazotto
Superconducting tunnel junctions constitute the units of superconducting quantum circuits and are massively used both for quantum sensing and quantum computation. In previous works…
A superconducting nonlinear thermoelectric heat engine
G. Marchegiani, A. Braggio, F. Giazotto
In a previous work, we predicted that a thermally biased tunnel junction between two different superconductors can display a thermoelectric effect of nonlinear nature in the temper…
Nonlinear thermoelectricity with electron-hole symmetric systems
G. Marchegiani, A. Braggio, F. Giazotto
In the linear regime, thermo-electric effects between two conductors are possible only in the presence of an explicit breaking of the electron-hole symmetry. We consider a tunnel j…
On-Chip Cooling by Heating with Superconducting Tunnel Junctions
Giampiero Marchegiani, Pauli Virtanen, Francesco Giazotto
Heat management and refrigeration are key concepts for nanoscale devices operating at cryogenic temperatures. The design of an on-chip mesoscopic refrigerator that works thanks to…
Phase-Tunable Thermal Logic: Computation with Heat
Federico Paolucci, Giampiero Marchegiani, Elia Strambini +1
Boolean algebra, the branch of mathematics where variables can assume only true or false value, is the theoretical basis of classical computation. The analogy between Boolean opera…
High operating temperature in V-based superconducting quantum interference proximity transistors
Nadia Ligato, Giampiero Marchegiani, Pauli Virtanen +2
Here we report the fabrication and characterization of fully superconducting quantum interference proximity transistors (SQUIPTs) based on the implementation of vanadium (V) in the…
Phase-Tunable Temperature Amplifier
Federico Paolucci, Giampiero Marchegiani, Elia Strambini +1
Coherent caloritronics, the thermal counterpart of coherent electronics, has drawn growing attention since the discovery of heat interference in 2012. Thermal interferometers, diod…
Josephson Quantum Heat Engine
G. Marchegiani, P. Virtanen, F. Giazotto +1
The design of a mesoscopic self-oscillating heat engine that works thanks to purely quantum effects is presented. The proposed scheme is amenable to experimental implementation wit…