Anomalous first-order Raman scattering in III-V quantum dots: Optical deformation potential interaction

Physical Review B - Condensed Matter and Materials Physics

Volumn 78, Issue 8, 2008, Pages

  Rolo, Anabela G ^a   Vasilevskiy, Mikhail I ^a   Hamma, Mimoun ^b   Trallero Giner, Carlos ^c  

^a UNIVERSITY OF MINHO   (Portugal)

^b SIDI MOHAMED BEN ABDELLAH UNIVERSITY   (Morocco)

^c UNIVERSITY OF HAVANA   (Cuba)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 50049099184     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.78.081304     Document Type: Article

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24. To the best of our knowledge, TO phonon dispersion curves have not been measured experimentally while earlier calculations [P. H. Borcherds, J. Phys. C JPSOAW 0022-3719 10.1088/0022-3719/8/13/011 8, 2022 (1975)] predicted that they are nearly flat. However, the asymmetry of the TO-type Raman peak and its blue shift for smaller QDs clearly indicate that bulk TO phonons with nonzero wave vector must have higher frequencies than the Γ -point ones, as it has been assumed in our calculations.