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Enhancement of the anomalous Hall effect and spin glass behavior in the bilayered manganite La2-2xSr1+2xMn2O7

机译:双层锰La2-2xSr1 + 2xMn2O7中异常霍尔效应和自旋玻璃行为的增强

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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 I 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. (c) 2005 Elsevier Ltd. All rights reserved.
机译:在双层锰La2-2xSr1 + 2xMn2O7(x = 0.36)的铁磁状态下研究了霍尔电阻率和磁化强度。霍尔电阻率表明,在低于50 K的低温下,正常和异常霍尔系数均增加,该区域在I mT的低磁场中发现了自旋玻璃态的实验证据。与磁态有关的霍尔电阻率异常行为的起因可能在于准二维电子系统中固有的微观不均匀性。 (c)2005 Elsevier Ltd.保留所有权利。

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