Observation of superconductivity in bilayer graphene/hexagonal boron nitride superlattices
arXiv:1901.09356
Abstract
A class of low-dimensional superconductivity (SC), such as most of "atomic-layer" SCs, has survived only under certain circumstances, implying a role of the substrate. Moreover, in some recent SC discoveries at heterogeneous interfaces, SC was buried in bulk solids and ex situ. Genuine atomic-layer SC is difficult to access. Here we report a novel route to atomic-layer SC in graphene superlattices. Our device comprises stacked non-twisted bilayer graphene (BLG) and hexagonal boron nitride (hBN), i.e., hBN/BLG/hBN Moiré superlattices. Upon in situ electrostatic doping, we observe an SC dome with a critical temperature up to , corresponding to the confinement of vortices. We believe that SC via doping Dirac materials is ubiquitous in condensed matter and that this study paves a way toward the design of a new SC family.
arXiv comment28 pages, 12 figures
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Cited by in corpus (12)
- Topology-Bounded Superfluid Weight In Twisted Bilayer Graphene
- Superconductivity and correlated phases in non-twisted bilayer and trilayer graphene
- Band Structure and Superconductivity in Twisted Trilayer Graphene
- An accurate description of the structural and electronic properties of twisted bilayer graphene-boron nitride heterostructures
- Ferromagnetism and its stability from the one-magnon spectrum in twisted bilayer graphene
- Pairing and non-Fermi liquid behavior in partially flat-band systems
- Symmetry of superconducting correlations in displaced bilayers of graphene
- Marginal Fermi liquid in twisted bilayer graphene
- Low-energy moiré phonons in twisted bilayer van der Waals heterostructures
- Superconducting Orbital Magnetoelectric Effect and its Evolution across the Superconductivity Normal Metal Phase Transition
- Single-Carrier Transport in Graphene/hBN Superlattices
- Spectroscopic Characterization of Landau Level Splitting and the Intermediate v = 0 Phase in Bilayer Graphene