Non-Josephson Emission from Intrinsic Junctions in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8 +{ital y}} : Cherenkov Radiation by Josephson Vortices
Journal Article
·
· Physical Review Letters
- Physikalisches Institut III, Universitaet Erlangen-Nuernberg, D-91058 Erlangen (Germany)
We have investigated Josephson vortex flow in intrinsic junctions in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+y}. In addition to the Josephson radiation we find a strong broadband non-Josephson microwave emission which is not expected for conventional junctions. We explain this non-Josephson signal by Cherenkov radiation occurring when the vortex velocity exceeds the lowest of the N possible mode velocities for electromagnetic waves in an N junction stack. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 560634
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 7 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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