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APS » Journals » Phys. Rev. Lett. » Volume 37 » Issue 19
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Phys. Rev. Lett. 37, 1299–1302 (1976)

Capillary-Wave Resonances of Electron-Hole Droplets

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B. Etienne†, L. M. Sander*,†, C. Benoît à la Guillaume†, and M. Voos†
Groupe de Physique des Solides de l'Ecole Normale Supérieure, Université Paris 7, 75005 Paris, France

J. Y. Prieur†
Laboratoire d'Ultrasons, Université Paris 6, 75005 Paris, France

Received 8 July 1976; published in the issue dated 8 November 1976

We have studied in the gigahertz range the ultrasonic attenuation by electron-hole droplets in Ge as function of their size. A broad bump is attributed to the resonant excitation of nonresolved capillary modes. From a detailed analysis of the line shape we derive a value of 3× 10-4 erg/cm2 for the surface tension of droplets. This is the first mechanical measurement of this quantity.

© 1976 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.37.1299
DOI:
10.1103/PhysRevLett.37.1299
PACS:

*Permanent address: Physics Department, University of Michigan, Ann Arbor, Mich. 48104. Supported by the National Science Foundation.

†Laboratoire associé au Centre National de la Recherche Scientifique.

 
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