Electron-phonon renormalization and phonon anharmonicity in metals

Peihong Zhang; Yu Xue; Pratibha Dev

doi:10.1016/j.ssc.2008.07.034

Electron-phonon renormalization and phonon anharmonicity in metals

Peihong Zhang
, Yu Xue
, Pratibha Dev

Physics

SUNY Buffalo

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Electron-phonon renormalization and phonon anharmonicity in metals are investigated by employing density functional theory based first-principles electronic structure methods. Using doped silicon, diamond, and MgB₂ as examples, it is shown that phonon anharmonicity may be significantly renormalized by electron-phonon interactions, especially for phonon modes that couple strongly with electrons. The unusually large third-order anharmonic potential of the E_{2 g} phonon in MgB₂ is largely due to the electron-phonon renormalization effect.

Original language	English
Pages (from-to)	151-154
Number of pages	4
Journal	Solid State Communications
Volume	148
Issue number	3-4
DOIs	https://doi.org/10.1016/j.ssc.2008.07.034
State	Published - Oct 2008

Keywords

D. Anharmonicity
D. Electron-phonon

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10.1016/j.ssc.2008.07.034

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abstract = "Electron-phonon renormalization and phonon anharmonicity in metals are investigated by employing density functional theory based first-principles electronic structure methods. Using doped silicon, diamond, and MgB2 as examples, it is shown that phonon anharmonicity may be significantly renormalized by electron-phonon interactions, especially for phonon modes that couple strongly with electrons. The unusually large third-order anharmonic potential of the E2 g phonon in MgB2 is largely due to the electron-phonon renormalization effect.",

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author = "Peihong Zhang and Yu Xue and Pratibha Dev",

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T1 - Electron-phonon renormalization and phonon anharmonicity in metals

AU - Zhang, Peihong

AU - Xue, Yu

AU - Dev, Pratibha

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N2 - Electron-phonon renormalization and phonon anharmonicity in metals are investigated by employing density functional theory based first-principles electronic structure methods. Using doped silicon, diamond, and MgB2 as examples, it is shown that phonon anharmonicity may be significantly renormalized by electron-phonon interactions, especially for phonon modes that couple strongly with electrons. The unusually large third-order anharmonic potential of the E2 g phonon in MgB2 is largely due to the electron-phonon renormalization effect.

AB - Electron-phonon renormalization and phonon anharmonicity in metals are investigated by employing density functional theory based first-principles electronic structure methods. Using doped silicon, diamond, and MgB2 as examples, it is shown that phonon anharmonicity may be significantly renormalized by electron-phonon interactions, especially for phonon modes that couple strongly with electrons. The unusually large third-order anharmonic potential of the E2 g phonon in MgB2 is largely due to the electron-phonon renormalization effect.

KW - D. Anharmonicity

KW - D. Electron-phonon

UR - https://www.scopus.com/pages/publications/50449084076

U2 - 10.1016/j.ssc.2008.07.034

DO - 10.1016/j.ssc.2008.07.034

M3 - Article

AN - SCOPUS:50449084076

SN - 0038-1098

VL - 148

SP - 151

EP - 154

JO - Solid State Communications

JF - Solid State Communications

IS - 3-4

ER -

Electron-phonon renormalization and phonon anharmonicity in metals

Abstract

Keywords

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