Dedicated to Prof. Wolfgang Eisenmenger on the occasion of his 65th birthday
- Autor(in)
- Referenz
-
10 E. S. Sabisky, C. H. Anderson, Phys. Rev. A 7 (1973) 790
11 S. E. Esipov, M. E. Msall, J. P. Wolfe, Phys. Rev. B 47 (1993) 13330
12 D. Marx, W. Eisenmenger, Z. Phys. B - Condensed Matte. 48 (1982) 277
13 M. Schwarte, P. Berberich, J. Phys. C.: Solid Stat. 18 (1985) 3225
14 W. Dietsche, H. Kinder, J. Low Temp. Phys. 23 (1976) 27
15 D. C. Hickernell, E. O. McLean, O. E. Vilches, J. Low Temp. Phys. 13 (1973) 241
16 J. Weber, W. Dietsche, H. Kinder, Phys. Lett. 64A (1977) 202
1 D. V. Kazakovtsev, Y. B. Levinson, Phys. Stat. Sol. B 96 (1979) 117
2 J. A. Shields, M. E. Msall, M. S. Carroll, J. P. Wolfe, Phys. Rev. B 47 (1993) 12510
3 S. A. Lyon, G. C. Osbourn, D. L. Smith, T. C. McGill, Sol. State Comm. 23 (1977) 425
4 R. C. Dynes, V. Narayanamurti, M. Chin, Phys. Rev. Lett. 26 (1971) 181
5 P. Berberich, H. Kinder, J. Phys. 42 C-6 (1981) 374
6 K. H. Wichert, G. Blahusch, C. Reimann, H. Kinder (appears in Annalen der Physik)
7 T. R. Roberts, S. G. Sydoriak, Phys. Rev. 102 (1956) 304
8 M. Sinvani, D. L. Goodstein, M. W. Cole, P. Taborek, Phys. Rev. B 30 (1984) 1231
9 C. H. Anderson, E. S. Sabisky, in: Physical Acoustics, W. P. Mason, R. N. Thurston (eds.), Academic, New York 1971, Vol. 8, 1
- Seitenbereich
-
0165 - 0174
- Schlagwort(e)
-
<KWD>Phonon spectrometer
Desorption of helium
Exciton
Optical excitation of silicon
Quasidiffusion
- Zusammenfsg.
-
We have studied the phonon spectra resulting from laser pulse excitation of a silicon surface. We used a phonon spectrometer based on pressure tuned boron levels in silicon (Si: B-spectrometer). A new design allowed us to use the spectrometer in vacuum for the first time. We observed phonon frequencies up to 1 THz. The pulse shapes indicated both, quasidiffusion and a long exciton lifetime. On adding helium films to the surface we have found dramatic changes of the spectrum. Full thermalisation was reached already at a thickness of 1.5 monolayers. This indicates a strong anharmonic interaction in the very first monolayers at these high frequencies and, in addition, a strong confinement of the phonons to the surface by quasidiffusion.
- Artikel-Typen
- Forschungsartikel