168 citations · 1.5k across the 42 of their papers we have counts for
42 papers
Direct observation of flat bands in near-magic-angle twisted bilayer CVD graphene
Gianluigi Baiardi, Alex Boschi, Giulia Piccinini +13
Advances in chemical vapor deposition (CVD) growth have driven graphene crystal quality to unprecedented levels, yet it is still unknown whether this route can realize the fragile…
Lifshitz transitions and isospin polarization in twist-decoupled monolayer-bilayer graphene
Alex Boschi, Leonardo Sabattini, Sergey Slizovskiy +10
Bernal-stacked bilayer graphene (BLG) hosts correlated electronic phases tied to low-energy Lifshitz transitions at saddle points in its valence band. To access this regime, ultral…
Scanning Gate Microscopy Modulation of Supercurrent in Graphene Josephson Junctions
Ivan Villani, Samuele Fracassi, Niccolò Traverso Ziani +9
Graphene Josephson junctions represent an excellent platform for quantum technologies, thanks to the combination of high carrier mobility, ballistic transport, and large gate-tunab…
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…
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…
Built-in Bernal gap in large-angle-twisted monolayer-bilayer graphene
Alex Boschi, Zewdu M. Gebeyehu, Sergey Slizovskiy +9
Atomically thin materials offer multiple opportunities for layer-by-layer control of their electronic properties. While monolayer graphene (MLG) is a zero-gap system, Bernal-stacke…
Scalable High-Mobility Graphene/hBN Heterostructures
Leonardo Martini, Vaidotas Mišeikis, David Esteban +8
Graphene-hexagonal boron nitride (hBN) scalable heterostructures are pivotal for the development of graphene-based high-tech applications. In this work, we demonstrate the realizat…
Probing enhanced electron-phonon coupling in graphene by infrared resonance Raman spectroscopy
Tommaso Venanzi, Lorenzo Graziotto, Francesco Macheda +16
We report on resonance Raman spectroscopy measurements with excitation photon energy down to 1.16 eV on graphene, to study how low-energy carriers interact with lattice vibrations.…
Moiré-Induced Transport in CVD-Based Small-Angle Twisted Bilayer Graphene
Giulia Piccinini, Vaidotas Mišeikis, Pietro Novelli +5
To realize the applicative potential of 2D twistronic devices, scalable synthesis and assembly techniques need to meet stringent requirements in terms of interface cleanness and tw…
Parallel transport and layer-resolved thermodynamic measurements in twisted bilayer graphene
Giulia Piccinini, Vaidotas Mišeikis, Kenji Watanabe +3
We employ dual-gated 30°-twisted bilayer graphene to demonstrate simultaneous ultra-high mobility and conductivity (up to 40 mS at room temperature), unattainable in a single-layer…
Ultra-clean high-mobility graphene on technologically relevant substrates
Ayush Tyagi, Vaidotas Mišeikis, Leonardo Martini +10
Graphene grown via chemical vapour deposition (CVD) on copper foil has emerged as a high-quality, scalable material, that can be easily integrated on technologically relevant platf…
Unexpected Electron Transport Suppression in a Heterostructures Graphene MoS2 Multiple Field-Effect Transistor Architecture
Gaia Ciampalini, Filippo Fabbri, Guido Menichetti +8
We demonstrate a graphene-MoS2 architecture integrating multiple field-effect transistors and we independently probe and correlate the conducting properties of van der Waals couple…
Wafer-scale integration of graphene-based photonic devices
Marco A. Giambra, Vaidotas Mišeikis, Sergio Pezzini +7
Graphene and related materials can lead to disruptive advances in next generation photonics and optoelectronics. The challenge is to devise growth, transfer and fabrication protoco…
Ultrafast, Zero-Bias, Graphene Photodetectors with Polymeric Gate Dielectric on Passive Photonic Waveguides
Vaidotas Mišeikis, Simone Marconi, Marco A. Giambra +15
We report compact, scalable, high-performance, waveguide integrated graphene-based photodetectors (GPDs) for telecom and datacom applications, not affected by dark current. To expl…
Synthesis of large-area rhombohedral few-layer graphene by chemical vapor deposition on copper
Chamseddine Bouhafs, Sergio Pezzini, Neeraj Mishra +6
Rhombohedral-stacked few-layer graphene (FLG) has been receiving an ever-increasing attention owing to its peculiar electronic properties that could lead to enticing phenomena such…
Photo Thermal Effect Graphene Detector Featuring 105 Gbit s-1 NRZ and 120 Gbit s-1 PAM4 Direct Detection
S. Marconi, M. A. Giambra, A. Montanaro +9
The challenge of next generation datacom and telecom communication is to increase the available bandwidth while reducing the size, cost and power consumption of photonic integrated…
Graphene Plasmonic Fractal Metamaterials for Broadband Photodetectors
Francesco De Nicola, Nikhil Santh Puthiya Purayil, Vaidotas Miŝeikis +6
Metamaterials have recently established a new paradigm for enhanced light absorption in state-of-the-art photodetectors. Here, we demonstrate broadband, highly efficient, polarizat…
High-speed double layer graphene electro-absorption modulator on SOI waveguide
Marco A. Giambra, Vito Sorianello, Vaidotas Miseikis +6
We report on a C-band double layer graphene electro-absorption modulator on a passive SOI platform showing 29GHz 3dB-bandwith and NRZ eye-diagrams extinction ratios ranging from 1.…
30-twisted bilayer graphene quasicrystals from chemical vapor deposition
Sergio Pezzini, Vaidotas Miseikis, Giulia Piccinini +8
The artificial stacking of atomically thin crystals suffers from intrinsic limitations in terms of control and reproducibility of the relative orientation of exfoliated flakes. Thi…
Deterministic direct growth of WS2 on CVD graphene arrays
Giulia Piccinini, Stiven Forti, Leonardo Martini +5
The combination of the exciting properties of graphene with those of monolayer tungsten disulfide (WS2) makes this heterostack of great interest for electronic, optoelectronic and…
CVD-graphene/graphene flakes dual-films as advanced DSSC counter electrodes
Andrea Capasso, Sebastiano Bellani, Alessandro Lorenzo Palma +10
The use of graphene-based electrodes is burgeoning in a wide range of applications, including solar cells, light emitting diodes, touch screens, field-effect transistors, photodete…
Driving with temperature the synthesis of graphene films on Ge(110)
L. Persichetti, M. De Seta, A. M. Scaparro +8
We systematically investigate the chemical vapor deposition growth of graphene on Ge(110) as a function of the deposition temperature close to the Ge melting point. By merging spec…
Waveguide-integrated, plasmonic enhanced graphene photodetectors
J. E. Muench, A. Ruocco, M. A. Giambra +13
We present a micrometer scale, on-chip integrated, plasmonic enhanced graphene photodetector (GPD) for telecom wavelengths operating at zero dark current. The GPD is designed and o…
Abrupt changes in the graphene on Ge(001) system at the onset of surface melting
L. Persichetti, L. Di Gaspare, F. Fabbri +7
By combining scanning probe microscopy with Raman and x-ray photoelectron spectroscopies, we investigate the evolution of CVD-grown graphene/Ge(001) as a function of the deposition…