Title :
Quantum 1/f effect in ferroelectric LiNbO3 SAW resonators
Author :
Handel, Peter H. ; Tsai, Chen S.
Author_Institution :
Dept. of Phys. & Astron., Missouri Univ., St. Louis, MO, USA
Abstract :
The quantum 1/f theory is applied to surface acoustic wave (SAW) LiNbO3 resonators. The theory has so far been applied only to quartz resonators. Here we first consider the case in which the phonons are coherent throughout the resonator volume. Then the quantum 1/f theory is applied to the general case of an arbitrary coherence length of the phonons, which may be large or small compared with the size of the resonator. This yields a 1/N factor in the expression of the power spectral density of resonance frequency fluctuations. The theory is further extended to include defect scattering along with the phonon scattering case exclusively considered so far
Keywords :
ferroelectric devices; fluctuations; lithium compounds; phonons; quantum theory; scattering; surface acoustic wave resonators; LiNbO3; LiNbO3 SAW resonators; coherent phonons; defect scattering; ferroelectric SAW resonators; phonon loss rate; phonon scattering; power spectral density; quantum 1/f effect; quantum 1/f theory; resonance frequency fluctuations; surface acoustic wave resonators; Acoustic scattering; Acoustic waves; Ferroelectric materials; Fluctuations; Particle scattering; Phonons; Quantum mechanics; Resonance; Resonant frequency; Surface acoustic waves;
Conference_Titel :
Frequency Control Symposium and Exhibition, 2000. Proceedings of the 2000 IEEE/EIA International
Conference_Location :
Kansas City, MO
Print_ISBN :
0-7803-5838-4
DOI :
10.1109/FREQ.2000.887418
