Pressure enhanced superconductivity in MoTe2
ORAL
Abstract
Molybdenum ditelluride (MoTe2) has attracted significant research interest due to the discovery of exotic topological states and pressure-driven superconductivity. First-principles calculations combined with the anisotropic Migdal-Eliashberg formalism have been carried out to investigate the role of electron-phonon interaction and the superconducting pairing mechanism in the two structurally similar phases, Td and 1T’, under pressure. We find that both phases are superconducting, with the centrosymmetric 1T’ phase displaying a slightly larger electron-phonon coupling strength compared to the non-centrosymmetric Td phase due to the softening of the low-energy phonon modes and a small increase in the density of states at the Fermi level.
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Presenters
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Hari Paudyal
Department of Physics, Applied Physics, and Astronomy, Binghamton University-SUNY
Authors
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Hari Paudyal
Department of Physics, Applied Physics, and Astronomy, Binghamton University-SUNY
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Samuel Ponce
Department of Materials, University of Oxford
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Elena R Margine
Department of Physics, Applied Physics, and Astronomy, Binghamton University-SUNY