Enhancement of the anomalous Hall effect and spin glass behavior in the bilayered manganite La2−2xSr1+2xMn2O7 |
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Authors: | Y. Hirobe Y. Ashikawa R. Kawasaki K. Noda D. Akahoshi H. Kuwahara |
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Affiliation: | Department of physics, Sophia University, Tokyo 102-8554, Japan |
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Abstract: | The Hall resistivity and magnetization have been investigated in the ferromagnetic state of the bilayered manganite La2−2xSr1+2xMn2O7 (x=0.36). The Hall resistivity shows an increase in both the ordinary and anomalous Hall coefficients at low temperatures below 50 K, a region in which experimental evidence for the spin glass state has been found in a low magnetic field of 1 mT. The origin of the anomalous behavior of the Hall resistivity relevant to magnetic states may lie in the intrinsic microscopic inhomogeneity in a quasi-two-dimensional electron system. |
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Keywords: | 72.80.Ga 75.40.&minus s 72.20.My |
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