Electromechanical Conversion in MS-Contacts; Determination of Frequency Response, Depletion Depths and Energy Levels

  • K. Fossheim
  • A. M. Raaen


Piezoelectricity is absent in centrosymmetric crystal classes. Yet, surface acoustic wave generation and detection can be performed with high efficiency in centrosymmetrie dielectrics by deposition of interdigital metal electrodes on the dielectric surface1. In this paper we discuss results of a similar nature for volume waves. We outline a model theory for acoustic volume wave generation and detection by metal-dielectric (or metal- semiconductor) contacts deposited on centrosymmetric, cubic crystals, and present experimental verification of the main results.


Depletion Region Volume Wave Depletion Depth Piezoelectric Generation Stress Free Surface 
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  1. 1.
    K. Fossheim and L. Bjerkan, Appl.Phys.Letters 32, 199 (1978); L. Bjerkan, J.O. Fossum and K. Fossheim, J.Appl.Phys. (in press)ADSCrossRefGoogle Scholar
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    H.K. Henisch, Rectifying semiconductor contacts, Oxford, at the Clarendon Press (1957)Google Scholar
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    A.M. Raaen and K. Fossheim, J.Phys.C. (to be published)Google Scholar
  4. 4.
    K. Fossheim, R.M. Holt and A.M. Raaen, J.Appl.Phys. (in press)Google Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • K. Fossheim
    • 1
  • A. M. Raaen
    • 1
  1. 1.Department of PhysicsThe Norwegian Institute of TechnologyTrondheim - NTHNorway

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