Collective Josephson Plasma Resonance in the Vortex State of Bi2Sr2CaCu2O8+δ
Y. Matsuda, M. B. Gaifullin, K. Kumagai, K. Kadowaki, T. Mochiku
DOI 10.1103/PhysRevLett.75.4512 · Physical Review Letters
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Abstract
We have measured the microwave surface resistance (30-60 GHz) for different crystallographic orientations in the vortex state of Bi2Sr2CaCu2O8+δ. A sharp magnetoabsorption resonance is observed below Tc when ac electric fields and magnetic fields are applied parallel to the c axis (Eac∥B∥c). We argue that the observed resonance arises from collective Josephson plasma oscillations generated by interlayer Josephson currents. From the frequency and temperature dependence of the resonance, we discuss the interlayer phase coherence in the vortex liquid and solid states quantitatively.
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. | 85 | Pressure not reported | unknown |
| La2-xSrxCuO4 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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