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http://hdl.handle.net/11375/19813
Title: | Far Infrared Optical Absorption in Manganese Fluoride |
Authors: | Neimanis, John |
Advisor: | Timusk, T. |
Department: | Physics |
Keywords: | far infrared, optical, absorption, Manganese Fluoride, phonon |
Publication Date: | May-1971 |
Abstract: | <p> The optical absorption in manganese fluoride has been studied in the range of 30 to 300 cm^-1 with emphasis placed on the possible multiple magnon absorptions (other than two-magnon) and an induced single magnon absorption. It is shown that theoretically one can expect four-magnon processes by expanding the Heisenberg spin hamiltonian to higher orders in the creation and annihilation operators introduced by the Holstein-Primakoff transformation. However, neither an induced one magnon nor four magnon process was observed. The absorptions which were seen in the spectra were attributed to phonon processes.</p> |
URI: | http://hdl.handle.net/11375/19813 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Neimanis_John_1971May_Masters..pdf | 1.41 MB | Adobe PDF | View/Open |
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