Here we investigate the pairing symmetry of bilayer graphene Moiré superlattices twisted at $heta$ = 1.05°, 1.10° and 1.16° for carrier doping states varied in the range of n=0.5-1.5 10^(12) cm^(-2) (where superconductivity can be realized) by analyzing the temperature dependence of ...
et al. Tuning superconductivity in twisted bilayer graphene. Science 363, 1059–1064 (2019). Article ADS CAS PubMed MATH Google Scholar Park, J. M., Cao, Y., Watanabe, K., Taniguchi, T. & Jarillo-Herrero, P. Tunable strongly coupled superconductivity in magic-angle twisted trilayer ...
We show that the recently observed superconductivity in twisted bilayer graphene (TBG) can be explained as a consequence of the Kohn-Luttinger (KL) instability which leads to an effective attraction between electrons with originally repulsive interaction. Usually, the KL instability takes place at ...
“It wasn’t clear if magic-angle bilayer graphene was an exceptional thing, but now we know it’s not alone; it has a cousin in the trilayer case,” Jarillo-Herrero says. “The discovery of this hypertunable superconductor extends the twistronics field into entirely new directions, ...
The deposition and intercalation of metal atoms can induce superconductivity in monolayer and bilayer graphenes. For example, it has been experimentally proved that Li-deposited graphene is a superconductor with critical temperature Tc of 5.9 K, Ca-intercalated bilayer graphene C6CaC6 and K-intercalate...
We consider Ca-intercalated graphene bilayer and argue that it is a superconductor, and likely with a sizeable T c. We find substantial and suggestive similarities between Ca-intercalated bilayer (C6CaC6), and CaC6, an established superconductor with T c = 11.5 K. In particular, the nearly ...
Monolayer NbSe2 is grown on bilayer graphene by molecular beam epitaxy and capped with a selenium film to avoid degradation in air. The selenium capped samples have TC = 1.9 K. In situ measurements down to 4 K in ultrahigh vacuum show that the effect of the selenium layer on the transport...
Since the discovery of superconductivity and correlated insulating states in magic-angle twisted bilayer graphene (MATBG)1,2, twisted van der Waals materials have become indispensable for the design of novel quantum materials at will3. In the quickly developing field of twistronics4, tremendous theo...
with each sheet twisted at precisely 1.05 degrees in relation to the one below it. (Graphene is a form of carbon consisting of a single layer of atoms in a honeycomb-like lattice pattern.) The resulting bilayer or trilayer has unusual electronic properties: for instance, it can be made into...
We find that these chiral interference patterns originate from the twist-dependent sextet of regions in momentum space in which the Fermi surfaces of the NbSe2monolayer and graphene overlap. This finding not only broadens our understanding of superconductivity in twisted bilayer systems but also opens...