Relationship between the Out-Of-Plane Resistance and the Subgap Resistance of Intrinsic Josephson Junctions in Bi2Sr2CaCu2O8+δ
A. Yurgens, D. Winkler, N. V. Zavaritsky, T. Claeson
DOI 10.1103/PhysRevLett.79.5122 · Physical Review Letters
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Abstract
We have experimentally demonstrated that the c-axis magnetoresistance peak effect is determined by the subgap resistance of intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ (Bi2212). Given a Bi2212 single crystal, the effect may be predicted from the c-axis current-voltage ( I−V) characteristics in zero magnetic field. At high magnetic field H, the I−V characteristics preserve their overall nonlinear shape at the transition temperature Tc(H)≤Tc(0) suggesting a smooth change of the vortex system with temperature. Observation of the gap feature below Tc(0) at all μ0H≤7 T means that the upper critical field is not attained at these fields.
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. | — | Pressure not reported | unknown |
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