Positive in-plane and negative out-of-plane magnetoresistance in the overdoped high-temperature superconductor Bi2Sr2CaCu2O8+x
G. Heine, W. Lang, X. L. Wang, S. X. Dou
DOI 10.1103/PhysRevB.59.11179 · Physical Review B
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Abstract
The in-plane and out-of-plane magnetoresistances of moderately overdoped Bi2Sr2CaCu2O8+x single crystals have been studied from Tc+5 K to Tc+100 K with the magnetic field oriented perpendicular and parallel to the current, respectively. The in-plane magnetoresistance is positive, the out-of-plane magnetoresistance negative, and their temperature variations depend on the orientation of the magnetic field. A recent theory for superconducting order parameter fluctuations is extended for the interaction of carrier spins with the magnetic field. The anomalous, anisotropic magnetoresistance can be described well by a unique set of physical parameters, which were found to correspond to estimates from the normal-state transport properties.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 81 | Pressure unresolved | midpoint |
| Bi2Sr2CaCu2O8+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 79 | Pressure unresolved | zero_resistance |
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