Theory of Bi2Sr2CaCu2O8+δ cross-whisker Josephson junctions
Richard A. Klemm
DOI 10.1103/PhysRevB.67.174509 · Physical Review B
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Abstract
Takano et al. [Phys. Rev. B 65, 140513 (2002); J. Low Temp. Phys. 131, 533 (2003)] made Josephson junctions from single crystal whiskers of Bi2Sr2CaCu2O8+δ crossed an angle φ0 about the c axis. From the mesa structures that formed at the cross-whisker interface, they inferred a critical current density Jc(φ0). As with the single crystal results of Li et al. [Phys. Rev. Lett. 83, 4160 (1999)], we show that the whisker data are unlikely to result from a predominantly d-wave order parameter. However, unlike the single crystals, these results, if correct, require the whisker c-axis transport to be coherent.
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. | 80 | Pressure not reported | onset |
| Bi2Sr2Ca2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 105 | Pressure not reported | onset |
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