OBSERVATION OF A DOUBLET IN THE QUASI-ELASTIC CENTRAL PEAK OF QUANTUM-PARAELECTRIC SRTIO3

Authors
HEHLEN B PEROU AL COURTENS E VACHER R
Citation
B. Hehlen et al., OBSERVATION OF A DOUBLET IN THE QUASI-ELASTIC CENTRAL PEAK OF QUANTUM-PARAELECTRIC SRTIO3, Physical review letters, 75(12), 1995, pp. 2416-2419
Citations number
23
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
75
Issue
12
Year of publication
1995
Pages
2416 - 2419
Database
ISI
SICI code
0031-9007(1995)75:12<2416:OOADIT>2.0.ZU;2-2
Abstract
Rayleigh-Brillouin light-scattering spectroscopy performed on oriented samples of tetragonal SrTiO3 reveals the presence of a new doublet at low temperatures. This scattering, also seen in KTaO3, appears in add ition to the broad central peak already reported by Lyons and Fleury. The likely origin of this spectral component is second sound, the wave like propagation of entropy.