| People | Locations | Statistics |
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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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Drummond, Neil David
Lancaster University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2017Nature of the metallization transition in solid hydrogencitations
- 2016Quasiparticle and excitonic gaps of one-dimensional carbon chainscitations
- 2015k · p theory for two-dimensional transition metal dichalcogenide semiconductorscitations
- 2014Electrons and phonons in single layers of hexagonal indium chalcogenides from ab initio calculationscitations
- 2014Electron-phonon coupling and the metallization of solid helium at terapascal pressurescitations
- 2014Spin-orbit coupling, quantum dots, and qubits in monolayer transition metal dichalcogenidescitations
- 2004Coulomb finite-size effects in quasi-two-dimensional systemscitations
Places of action
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article
Electron-phonon coupling and the metallization of solid helium at terapascal pressures
Abstract
Solid He is studied in the pressure and temperature ranges 1-40 TPa and 0-10 000 K using first-principles methods. Anharmonic vibrational properties are calculated within a self-consistent field framework, including the internal and free energies, density-pressure relation, stress tensor, thermal expansion, and the electron-phonon coupling renormalization of the electronic band gap. We find that an accurate description of electron-phonon coupling requires us to use a nonperturbative approach. The metallization pressure of 32.9 TPa at 0 K is larger than found previously. The vibrational effects are large; for example, at P=30 TPa the band gap is increased by 2.8 eV by electron-phonon coupling and a further 0.1 eV by thermal expansion compared to the static value. The implications of the calculated metallization pressure for the cooling of white dwarfs are discussed.