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Giant Anharmonicity And Nonlinear Electron-Phonon Coupling In Mgb2: A Combined First-Principles Calculation And Neutron Scattering Study

PHYSICAL REVIEW LETTERS, no. 3 (2001)

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First-principles calculations of the electronic band structure and lattice dynamics for the new superconductor MgB2 are carried out and found to be in excellent agreement with our inelastic neutron scattering measurements. The numerical results reveal that the E-2g in-plane boron phonons near the zone center are very anharmonic and strong...更多

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