Excitation of Josephson plasma and vortex oscillation modes in Bi2Sr2CaCu2O8+δ in parallel magnetic fields
Y. Matsuda, M. B. Gaifullin, K. Kumagai, K. Kadowaki, T. Mochiku, K. Hirata
DOI 10.1103/PhysRevB.55.R8685 · Physical Review B
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Abstract
The Josephson plasma resonance of Bi2Sr2CaCu2O8+δ in parallel magnetic fields has been measured by angular alignment with ∼0.02 degree precision to reveal the phase collective modes in the Josephson vortex lattice. When the angle θ between the field and the CuO2 plane is tilted from the c axis, the resonance field scales as H sin θ in the range θ≳4°. At lower angles, the resonance field shows anomalous decreases with decreasing θ. A disappearance of the resonance has been unexpectedly found for angles within θ∼0.2°, which may correspond to the angle where the lock-in transition takes place. The origin of the phenomenon is discussed in terms of the Josephson plasma oscillation and Josephson vortex oscillation modes.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89.5 | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 87 | Pressure not reported | unknown |
| Bi2Sr2CuO6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| (BEDT-TTF)2Cu(NCS)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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