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APS » Journals » Phys. Rev. Lett. » Volume 40 » Issue 7
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Phys. Rev. Lett. 40, 461–465 (1978)

Intrinsic Surface Phonons in Porous Glass

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R. B. Laughlin and J. D. Joannopoulos
Department of Physics and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

C. A. Murray, K. J. Hartnett, and T. J. Greytak
Department of Physics and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

Received 3 November 1977; revised 4 January 1978; published in the issue dated 13 February 1978

Raman scattering and infrared reflectivity measurements have been performed on samples of porous Vycor glass. Three features in the spectra are due to intrinsic surface phonons. This identification is supported by a simple new theory for the surface.

© 1978 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.40.461
DOI:
10.1103/PhysRevLett.40.461
PACS:
 
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