Infrared absorption, multiphonon processes and time reversal effect on Si and Ge band structure

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dc.contributor.author Kunert, Herbert W.
dc.contributor.author Machatine, Augusto Gonçalo Jose
dc.contributor.author Malherbe, Johan B.
dc.contributor.author Barnas, J.
dc.contributor.author Hoffmann, A.
dc.contributor.author Wagner, M.R.
dc.date.accessioned 2009-01-20T06:35:27Z
dc.date.available 2009-01-20T06:35:27Z
dc.date.issued 2008
dc.description.abstract We have examined the effect of Time Reversal Symmetry (TRS) on vibrational modes and on the electronic band structure of Si and Ge. Most of the primary non-interacting modes are not affected by TRS. Only phonons originating from high symmetry lines S and A of the Brillouin Zone (BZ) indicate extra degeneracy. Selection rules for some two and three phonons originating from high symmetry lines are determined. The states of electrons and holes described by electronic band structure due to spin-inclusion are assigned by spinor representations of the double space group. Inclusion of the TRS into the band structure results in extra degeneracy of electrons and holes, and therefore optical selection rules suppose to be modified. en_US
dc.identifier.citation Kunert, HW, Machatine, AGJ, Malherbe, JB, Barnas, J, Hoffmann, A & Wagner, MR 2008, ‘Infrared absorption, multiphonon processes and time reversal effect on Si and Ge band structure’, Thin Solid Films, vol. 517, no. 1, pp. 134–136. [http://www.elsevier.com/locate/tsf] en_US
dc.identifier.issn 0040-6090
dc.identifier.other 10.1016/j.tsf.2008.08.033
dc.identifier.uri http://hdl.handle.net/2263/8633
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.rights Elsevier en_US
dc.subject Infrared absorption en_US
dc.subject Time reversal en_US
dc.subject Phonons en_US
dc.subject Space groups en_US
dc.subject Selection rules en_US
dc.subject Si en_US
dc.subject Ge en_US
dc.subject.lcsh Phonons
dc.subject.lcsh Time reversal
dc.subject.lcsh Brillouin zones
dc.subject.lcsh Electrons
dc.subject.lcsh Spinor analysis
dc.title Infrared absorption, multiphonon processes and time reversal effect on Si and Ge band structure en_US
dc.type Postprint Article en_US


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