High frequency high-order Rayleigh modes in ZnO/GaAs

Author

Pedrós, J. ; Ford, C.J.B. ; Barnes, C.H.W. ; Griffiths, J.P. ; Jones, G.A.C. ; García-Gancedo, L. ; Flewitt, A.J. ; Calle, F.

Author_Institution

Cavendish Lab., Univ. of Cambridge, Cambridge, UK

fYear

2011

fDate

2-5 May 2011

Firstpage

1

Lastpage

4

Abstract

Strong high-order Rayleigh or Sezawa modes, in addition to the fundamental Rayleigh mode, have been observed in ZnO/GaAs(001) systems along the [110] propagation direction of GaAs. The dispersion of the different acoustic waves has been calculated and compared to the experimental data. The bandwidth and impedance matching characteristics of the multimode SAW delay lines operating at high frequencies (2.5-3.5 GHz regime) have been investigated.

Keywords

II-VI semiconductors; III-V semiconductors; Rayleigh waves; acoustic wave scattering; gallium arsenide; impedance matching; surface acoustic wave delay lines; surface acoustic waves; zinc compounds; Sezawa modes; ZnO-GaAs; acoustic wave dispersion; bandwidth characteristic; frequency 2.5 GHz to 3.5 GHz; high frequency high order Rayleigh modes; impedance matching; multimode SAW delay lines; propagation direction; Bandwidth; Delay lines; Films; Gallium arsenide; Substrates; Surface acoustic waves; Zinc oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International

Conference_Location

San Fransisco, CA

ISSN

1075-6787

Print_ISBN

978-1-61284-111-3

Type

conf

DOI

10.1109/FCS.2011.5977836

Filename

5977836