On the superconductivity of graphite interfaces

Abstract

We propose an explanation for the appearance of superconductivity at the interfaces of graphite with Bernal stacking order. A network of line defects with flat bands appears at the interfaces between two slightly twisted graphite structures. Due to the flat band the probability to find high temperature superconductivity at these quasi one-dimensional corridors is strongly enhanced. When the network of superconducting lines is dense it becomes effectively two-dimensional. The model provides an explanation for several reports on the observation of superconductivity up to room temperature in different oriented graphite samples, graphite powders as well as graphite-composite samples published in the past.

4 pages, two figures, JETP Letters (September 2014, in press)

References in corpus (5)

• Evidence of Josephson-coupled superconducting regions at the interfaces of Highly Oriented Pyrolytic Graphite
• Tuning Structures and Electronic Spectra of Graphene Layers by Tilt Grain Boundaries
• Flat Bands near Fermi Level of Topological Line Defects on Graphite
• Merging of Landau levels in a strongly-interacting two-dimensional electron system in silicon
• Invited review: Graphite and its hidden superconductivity

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• Flat band superconductivity in strained Dirac materials
• Twists and The Electronic Structure of Graphitic Materials
• Identification of a possible superconducting transition above room temperature in natural graphite crystals
• From Standard Model of particle physics to room-temperature superconductivity
• Flat band superconductivity in the square-octagon lattice
• Emergent geometric frustration and flat band in moiré bilayer graphene
• Influence of rhombohedral stacking order in the electrical resistance of bulk and mesoscopic graphite
• Flat bands as a route to high-temperature superconductivity in graphite
• Evidence for room temperature superconductivity at graphite interfaces
• Unconventional superconductivity in low density electron systems and conventional superconductivity in hydrogen metallic alloys under pressure
• Granular superconductivity below 5~K in SPI-II pyrolytic graphite
• Superconductivity in twisted multilayer graphene: a smoking gun in recent condensed matter physics
• Local Magnetic Measurements of Trapped Flux Through a Permanent Current Path in Graphite
• Collective amplitude mode fluctuations in a flat band superconductor
• Preformed Cooper pairs in flat-band semimetals
• Graphite on graphite
• Simple circuit and experimental proposal for the detection of gauge-waves
• Magnetic order and superconductivity observed in bundles of Double-Wall Carbon Nanotubes
• Topological materials with extensive flat-band surface states
• Ion-beam-milled graphite nanoribbons as mesoscopic carbon-based polarizers
• On the effect of disorder in a $p$-wave flat-band superconductor