Observation of a Doublet in the Quasielastic Central Peak of Quantum-Paraelectric SrTi
- 18 September 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 75 (12) , 2416-2419
- https://doi.org/10.1103/physrevlett.75.2416
Abstract
Rayleigh-Brillouin light-scattering spectroscopy performed on oriented samples of tetragonal SrTi reveals the presence of a new doublet at low temperatures. This scattering, also seen in KTa, appears in addition to the broad central peak already reported by Lyons and Fleury. The likely origin of this spectral component is second sound, the wavelike propagation of entropy.
Keywords
This publication has 19 references indexed in Scilit:
- Phonon anomalies in SrTiO3in the quantum paraelectric regimePhysica Scripta, 1993
- Indication for a novel phase in the quantum paraelectric regime of SrTiO3Zeitschrift für Physik B Condensed Matter, 1991
- Uniaxial pressure device for neutron scattering experimentsNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1986
- SrTi: An intrinsic quantum paraelectric below 4 KPhysical Review B, 1979
- Dynamic Central Peaks in a Crystalline Solid: KTaPhysical Review Letters, 1976
- Simple stabilization scheme for maintenance of mirror alignment in a scanning February-Perot interferometerJournal of Physics E: Scientific Instruments, 1976
- Stress-induced ferroelectricity and soft phonon modes in SrTiPhysical Review B, 1976
- Dynamics and statistical mechanics of a one-dimensional model Hamiltonian for structural phase transitionsPhysical Review B, 1975
- Monodomain strontium titanateSolid State Communications, 1970
- Electric-Field-Induced Raman Scattering in SrTiand KTaPhysical Review B, 1968