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anharmonicity |
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anharmonicity [¦an‚här·mə′nis·əd·ē] (physics) Mechanical vibration where the restoring force acting on a system does not vary linearly with displacement from equilibrium position. Variation from a linear relationship of dipole moment with internuclear distance in the infrared portion of the electromagnetic spectrum. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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This coupling gives rise not only to strong anharmonicity for these phonon modes, but to a large non-linear electron-phonon coupling that explains the high [T. |
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