Acoustic phonon power spectra in a periodic superlattice | Zendy

Mauriz P. W. | Zendy; Vasconcelos M. S. | Zendy; Albuquerque E. L. | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

Acoustic phonon power spectra in a periodic superlattice

Author(s) -

Mauriz P. W.,

Vasconcelos M. S.,

Albuquerque E. L.

Publication year - 2006

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.200541513

Subject(s) - phonon , superlattice , formalism (music) , dissipation , spectral line , wave vector , physics , condensed matter physics , power law , excitation , statistical physics , quantum mechanics , mathematics , art , musical , statistics , visual arts

We consider a Green function formalism, based on the frequency distribution, to study the propagation of acoustic phonon modes in a periodic superlattice. The calculations are based on the linear response function approach, which is very convenient to deal with this kind of problem. A damping term γ is included in a phenomenological way into the wavevector expression. In order to examine the phonon excitation, we also determine, by using the fluctuation‐dissipation theorem, their power spectra, which have many interesting properties. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research