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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Hague, James
The Open University
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Publications (5/5 displayed)
- 2022Superlight pairs in face-centred-cubic extended Hubbard models with strong Coulomb repulsioncitations
- 2013Ge/SiGe superlattices for nanostructured thermoelectric modulescitations
- 2009Superconductivity in a Hubbard-Fröhlich model and in cupratescitations
- 2006<i>d</i>-wave superconductivity from electron-phonon interactionscitations
- 2004High mobility SiGe heterostructures fabricated by low-energy plasma-enhanced chemical vapor depositioncitations
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article
Superlight pairs in face-centred-cubic extended Hubbard models with strong Coulomb repulsion
Abstract
The majority of fulleride superconductors with unusually high transition-temperature to kinetic-energy ratios have a face-centred-cubic (FCC) structure. We demonstrate that, within extended Hubbard models with strong Coulomb repulsion, paired fermions in FCC lattices have qualitatively different properties than pairs in other three-dimensional cubic lattices. Our results show that strongly bound, light, and small pairs can be generated in FCC lattices across a wide range of the parameter space. We estimate that such pairs can Bose condense at high temperatures even if the lattice constant is large (as in the fullerides).