Publication Details

This article was originally published as: Heine, G, Lang, W, Wang, XL & Dou, SX, Positive in-plane and negative out-of-plane magnetoresistance in the overdoped high-temperature superconductor Bi2Sr2CaCu2O8 + x, Physical Review B, 1999, 59(17), 11179-11182. Copyright 1999 American Physical Society. The original journal can be found here.


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.

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