Title :
Resonant subterahertz coherent acoustic waves excitation by Josephson junction
Author :
Polzikova, Natalia I. ; Mansfeld, Georgy D. ; Tokpanov, Yury S. ; Koshelets, Valery P.
Author_Institution :
Kotel´´nikov Inst. of Radio-Eng. & Electron., Russian Acad. of Sci., Moscow, Russia
Abstract :
A superfine resonant structure with a voltage spacing of about 19 nV (corresponding frequency 9 MHz) and an extremely low differential resistance has been observed in the Josephson Flux Flow Oscillator (FFO) IVCs. We have analyzed coherent phonon radiation and detection due to the interaction of Josephson´s electromagnetic oscillations with mechanical displacement field caused by piezoelectric effect or electrostriction effect. In contrast to the other works we consider sound generation in the Josephson tunneling structure, deposited on the rather thick substrate. This layered structure plays the role of high overtone composite resonator for bulk acoustic waves propagating normally to the layers.
Keywords :
bulk acoustic wave devices; electrostriction; oscillators; phonons; piezoelectricity; resonators; superconducting junction devices; FFO IVC; Josephson electromagnetic oscillations; Josephson flux flow oscillator IVC; Josephson junction; Josephson tunneling structure; bulk acoustic waves; coherent phonon radiation; electrostriction effect; frequency 9 MHz; high overtone composite resonator; mechanical displacement field; piezoelectric effect; resonant subterahertz coherent acoustic wave excitation; superfine resonant structure; voltage spacing; Acoustics; Dielectrics; Josephson junctions; Junctions; Oscillators; Resonant frequency; Substrates;
Conference_Titel :
Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International
Conference_Location :
San Fransisco, CA
Print_ISBN :
978-1-61284-111-3
DOI :
10.1109/FCS.2011.5977826
