Local Density Theory of Polarizability

By Gerald D. Mahan and K R Subbaswamy

Book Overview

During the past decade the theoretical physics community has learned how to evaluate accurately polarizabilities and susceptibilities for many-electron systems such as atoms, solids, and liquids. The most accurate numerical technique employs a method often called the Time-Dependent Local Density Approximation, which is abbreviated TDLDA. The present volume is a review of recent research on the theory of po- larizabilities and susceptibilities. Both authors have been doing these cal- culations. However, this review surveys the entire field, summarizing the research of many contributors. The application of an external field, either ac or de, will induce a dipole moment which can be calculated and compared with experiment. For mod- erately strong fields, both linear and nonlinear processes contribute to the moment. We cover topics such as polarizability, hyperpolarizability, pho- toionization, phonons, and piezoelectricity. Density functional theory in the Local Density Approximation (LDA) has been shown to be a very accurate method for calculating ground state prop- erties of electronic system. For static external fields, the induced moments are properties of the ground state. Then the calculation of the polarizability - is very accurate. For ac fields, the moment is not part of the ground state. However, the TDLDA methods are still very accurate.

• Format: Hardcover
• Language: English
• ISBN: 030643685X
• ISBN13: 9780306436857
• Release Date: September 1990
• Publisher: Springer
• Length: 255 Pages
• Weight: 1.54 lbs.
• Dimensions: 0.7" x 7.0" x 10.0"