The article presents a breakthrough in the field of superconductivity, reporting the discovery of robust unconventional superconductivity in rhombohedral tetra- and penta-layer graphene, distinct from moire superlattice effects. This work highlights two superconducting states within gate-induced flat conduction bands reaching critical temperatures (Tc) up to 300 mK and low charge density thresholds. Notably, the discovery entails spontaneous time-reversal-symmetry-breaking resulting from electron's orbital motion, thereby providing critical insights that could foster future developments in topological physics and quantum computing applications.
Our findings introduce robust unconventional superconductivity in rhombohedral tetra- and penta-layer graphene, showcasing properties crucial for advancements in quantum computing and topological physics.
The observed superconducting states present a significant breakthrough, particularly with critical temperature (Tc) reaching 300 mK and charge density levels indicating favorable conditions for future research.
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