Coherent potential approximation
In Physics the Coherent Potential Approximation commonly referred to simply as the CPA is a method to find the Green's function of an effective medium. The CPA is a useful concept in understanding how waves scatter in a material which displays spatial inhomogeneity.
This method is related to the muffin-tin approximation used to calculate band structure in solids. A variational implementation using Green's functions was suggested by Korringa and by Kohn and Rostocker, and is often referred to as the KKR method.[1][2]
References
- ^ Joginder Singh Galsin (2001). Impurity Scattering in Metal Alloys. Springer. p. Appendix C. ISBN 0306465744.
- ^ Kuon Inoue, Kazuo Ohtaka (2004). Photonic Crystals. Springer. p. p. 66. ISBN 3540205594.
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Further reading
- Sheng, Ping (1995). Introduction to Wave Scattering, Localization, and Mesoscopic Phenomena. Academic Press. ISBN 0-12-639845-3.
- Yonezawa and Morigaki (1973). "Coherent Potential Approximation: Basic concepts and applications". Progress of Theoretical Physics, Supplement number 53. 14: 1–76. doi:10.1016/0003-4916(61)90051-3.
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