INFLUENCE OF LIGHT ON A CERAMIC YBA2CU3O7-DELTA SQUID AT 77-K

Authors
LAIHO R ILICHEV EV ZAKOSARENKO VM
Citation
R. Laiho et al., INFLUENCE OF LIGHT ON A CERAMIC YBA2CU3O7-DELTA SQUID AT 77-K, Physica. C, Superconductivity, 223(1-2), 1994, pp. 123-130
Citations number
33
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
223
Issue
1-2
Year of publication
1994
Pages
123 - 130
Database
ISI
SICI code
0921-4534(1994)223:1-2<123:IOLOAC>2.0.ZU;2-K
Abstract
Flow of magnetic flux, initiated by visible light, has been observed i n a ceramic YBa2Cu3O(x)rfSQUID operated at 77 K in the nonhysteretic m ode. The response of the SQUID to the applied optical power density is linear and has a coefficient of conversion approximately 90 phi0/mW O e, in units of the flux quantum phi0. Experiments made with illuminati ng a piece of the SQUID material inserted into its coupling hole show that the induced flux motion has exponential time dependence, especial ly at small time values. No influence of light on the 1/f noise figure of the SQUID was observed.