Nonlinear Josephson plasma resonance in Bi2Sr2CaCu2Oy
Tetsuo Hanaguri, Yoshishige Tsuchiya, Atsutaka Maeda
DOI 10.1103/PhysRevB.58.R8929 · Physical Review B
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Abstract
Nonlinearity of the Josephson plasma resonance (JPR) was investigated in Bi2Sr2CaCu2Oy. In the absence of magnetic field, a JPR peak in the temperature dependence of the microwave absorption accompanied a sudden and hysteretic change in the low temperature side of the peak. With increasing microwave power, the peak shifted to lower temperatures and the hysteresis width increased. These features were reproduced by the model for a single shunted junction, indicating that the phase difference between layers was almost uniform. Q factors of the resonance were estimated to be ≳3, suggesting a chaotic state in the high power microwave region. We also argue that the nonlinearity of the JPR can be a tool to study the vortex lattice melting transition.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 84 | Pressure not reported | unknown |
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