Probing the collective Josephson plasma resonance in Bi2Sr2CaCu2O8+y by W-band-mixing experiments
W. Walkenhorst, G. Hechtfischer, S. Schlötzer, R. Kleiner, P. Müller
DOI 10.1103/PhysRevB.56.8396 · Physical Review B
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Abstract
We report on W-band-mixing experiments with mesa structures patterned on top of Bi2Sr2CaCu2O8+y single crystals. Due to the intrinsic Josephson effect the mixing process could be observed. There is a steep increase of the mixing intensity when the bias current approaches the critical current. We show that the mixing response is related to the excitation of the collective Josephson plasma resonance. In magnetic fields we observed a decrease of the Josephson plasma frequency. From this dependence we were able to estimate the frequency of the Josephson plasma resonance for zero bias and zero field ranging from 105 to 220 GHz.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89 | Pressure not reported | onset |
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