The boson peak in amorphous silica: Results from molecular dynamics computer simulations | Zendy

Jürgen Horbach | Zendy; Walter Kob | Zendy; Kurt Binder | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

The boson peak in amorphous silica: Results from molecular dynamics computer simulations

Author(s) -

Jürgen Horbach,

Walter Kob,

Kurt Binder

Publication year - 1999

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.59458

Subject(s) - amorphous solid , molecular dynamics , boson , coupling (piping) , harmonic , silicon , molecular vibration , amorphous silica , dynamics (music) , feature (linguistics) , harmonic oscillator , phonon , physics , materials science , molecular physics , molecule , condensed matter physics , chemistry , crystallography , optoelectronics , quantum mechanics , composite material , engineering , chemical engineering , acoustics , linguistics , philosophy

We investigate a prominent vibrational feature in amorphous silica, theso-called boson peak, by means of molecular dynamics computer simulations. Thedynamic structure factor S(q,nu) in the liquid, as well as in the glass state,scales roughly with temperature, in agreement with the harmonic approximation.By varying the size of the system and the masses of silicon and oxygen we showthat the excitations giving rise to the boson peak are due to the coupling totransverse acoustic modes.Comment: 6 pages of Latex, 3 figures, uses aipproc.sty; to appear in proceedings of "Neutrons and Numerical Methods" Grenoble, Dec. 1998, Ed. H.G. Buttner et a

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research