EXPERIMENTAL-EVIDENCE FOR SPATIAL-DISPERSION EFFECTS AND THE CHANGE OF SIGN OF DIELECTRIC PERMITTIVITY IN SUPERCONDUCTORS FROM MICROWAVE MEASUREMENTS

Authors
APAKINA VN DRAVIN VA ELTSEV YF KARUZSKII AL MURZIN VN PERESTORONIN AV VOLCHKOV NA ZHURKIN BG
Citation
Vn. Apakina et al., EXPERIMENTAL-EVIDENCE FOR SPATIAL-DISPERSION EFFECTS AND THE CHANGE OF SIGN OF DIELECTRIC PERMITTIVITY IN SUPERCONDUCTORS FROM MICROWAVE MEASUREMENTS, Physica. C, Superconductivity, 282, 1997, pp. 1585-1586
Citations number
4
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
3
Pages
1585 - 1586
Database
ISI
SICI code
0921-4534(1997)282:<1585:EFSEAT>2.0.ZU;2-B
Abstract
Short-scale spatial modulation of the resonance field in a microstrip resonator revealed by experiment was used to study the spatial dispers ion effects in dielectric properties of Nb and YBa2Cu3O7 superconducto rs. The results show a negative sign of a real part of epsilon(omega,k ) the dielectric permittivity, which absolute value drastically depend s on configuration of the electric field, suggesting strong spatial di spersion effects in these materials.