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arXiv · 2012.13211

Unconventional superconductivity near a flat band in organic and organometallic materials

Jaime Merino·Manuel Fernandez Lopez·Ben J. Powell
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Abstract

We study electron correlation driven superconductivity on a decorated honeycomb lattice (DHL), which has a low-energy flat band. On doping, we find singlet superconductivity with extended-s, extended-d and f-wave symmetry mediated by magnetic exchange. f-wave singlet pairing is enabled by the lattice decoration. The critical temperature is predicted to be significantly higher than on similar lattices lacking flat bands. We discuss how high-temperature superconductivity could be realized in the DHL materials such as Rb3TT. 2 H2O and Mo3S7(dmit)3.

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Jaime Merino, Manuel Fernandez Lopez, Ben J. Powell. 2020-12-24. Unconventional superconductivity near a flat band in organic and organometallic materials. https://doi.org/10.1103/physrevb.103.094517

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