DETAILS OF COHERENT PHONON MOTION IN TELLURIUM

Authors
HUNSCHE S WIENECKE K KURZ H
Citation
S. Hunsche et al., DETAILS OF COHERENT PHONON MOTION IN TELLURIUM, Applied physics A: Materials science & processing, 62(5), 1996, pp. 499-502
Citations number
18
Categorie Soggetti
Physics, Applied
Journal title
Applied physics A: Materials science & processing → ACNP
ISSN journal
09478396
Volume
62
Issue
5
Year of publication
1996
Pages
499 - 502
Database
ISI
SICI code
0947-8396(1996)62:5<499:DOCPMI>2.0.ZU;2-T
Abstract
We study impulsively excited coherent phonons in tellurium at various lattice temperatures and excitation densities. From a comparison with temperature-dependent reflectivity and X-ray scattering data, we infer the direction and estimate the amplitude of the coherent ionic motion . In addition, we show quantitatively that electronic weakening of the crystal forms the dominant contribution to a density-dependent red-sh ift of the phonon frequency.