**Take a sneak peek at the new NIST.gov and let us know what you think!***(Please note: some content may not be complete on the beta site.)*.

NIST Authors in **Bold**

Author(s): | P Allen; Marvin Cohen; David R. Penn; |
---|---|

Title: | Total Dielectric Function: Algebraic Sign, Electron-Lattice Response, and Superconductivity |

Published: | August 01, 1988 |

Abstract: | The interaction between two test charges in a solid can be described in terms of a total dielectric function that includes electronic and lattice polarization. Crystal stability requires the eigenvalues of ε^{-1} to be <= 1. Some implications for superconductivity are discussed. A total dielectric function for the electron-lattice system is derived in the mean-field approximation and its inverse is explicitly constructed. The low-lying poles of ε^{-1} give the correct phonon frequencies as determined by the usual dynamical matrix. |

Citation: | Physical Review B (Condensed Matter and Materials Physics) |

Volume: | 38 |

Issue: | 4 |

Pages: | pp. 2513 - 2525 |

Research Areas: | Condensed Matter Physics |