E. Andrei

Publications196
h-index39
Citations9,185
Highly Influential Citations126
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Approaching ballistic transport in suspended graphene.
TLDR
This work shows that the fluctuations are significantly reduced in suspended graphene samples and reports low-temperature mobility approaching 200,000 cm2 V-1 s-1 for carrier densities below 5 x 109 cm-2, which cannot be attained in semiconductors or non-suspended graphene.
Observation of Van Hove singularities in twisted graphene layers
When a Van Hove singularity exists near the Fermi energy of a solid’s density of states, it can cause a variety of exotic phenomena to emerge. Scanning tunnelling microscope measurements indicate…
Scanning tunneling spectroscopy of graphene on graphite.
We report low temperature high magnetic field scanning tunneling microscopy and spectroscopy of graphene flakes on graphite that exhibit the structural and electronic properties of graphene decoupled…
Fractional quantum Hall effect and insulating phase of Dirac electrons in graphene
TLDR
The quintessential collective quantum behaviour in two dimensions, the fractional quantum Hall effect (FQHE), has so far resisted observation in graphene despite intense efforts and theoretical predictions of its existence and it is believed that these results will open the door to the physics of FQHE and other collective behaviour in graphene.
Quantized Landau level spectrum and its density dependence in graphene
Scanning tunneling microscopy and spectroscopy in magnetic field was used to study Landau quantization in graphene and its dependence on charge carrier density. Measurements were carried out on…
Charge order and broken rotational symmetry in magic-angle twisted bilayer graphene
TLDR
When scanning tunnelling spectroscopy is used to map the electronic structure of magic-angle twisted bilayer graphene, a pseudogap phase is found, accompanied by a global charge-ordered stripe phase, which provides new evidence of a deeper link underlying the phenomenology of these systems.
Electronic properties of graphene: a perspective from scanning tunneling microscopy and magnetotransport.
This review covers recent experimental progress in probing the electronic properties of graphene and how they are influenced by various substrates, by the presence of a magnetic field and by the…
Single-layer behavior and its breakdown in twisted graphene layers.
TLDR
High magnetic field scanning tunneling microscopy and Landau level spectroscopy of twisted graphene layers grown by chemical vapor deposition observe an unexpected electron-hole asymmetry which is substantially larger than the asymmetry in either single or untwayer graphene.
Observation of Landau levels of Dirac fermions in graphite
The unique electronic behaviour of monolayer and bilayer graphene1,2 is a result of the unusual quantum-relativistic characteristics of the so-called ‘Dirac fermions’ (DFs) that carry charge in these…
Josephson current and multiple Andreev reflections in graphene SNS junctions
The Josephson effect and superconducting proximity effect were observed in superconductor-graphene-superconductor (SGS) Josephson junctions with coherence lengths comparable to the distance between…
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