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arxiv: cond-mat/0406078 · v2 · submitted 2004-06-03 · ❄️ cond-mat.dis-nn · cond-mat.supr-con

Magnetothermopower and Magnetoresistivity of RuSr2Gd1-xLaxCu2O8 (x=0, 0.1)

C.-J. Liu , C.-S. Sheu , T.-W. Wu , L.-C. Huang , F. H. Hsu , H. D.Yang , G. V. M. Williams , Chia-Jung C. Liu This is my paper
classification ❄️ cond-mat.dis-nn cond-mat.supr-con
keywords decreasefieldthermopowerapplyinglayersmagneticmagnetoresistivitymagnetothermopower
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We report measurements of magnetothermopower and magnetoresistivity as a function of temperature on RuSr2Gd1-xLaxCu2O8 (x = 0, 0.1). The normal-state thermopower shows a dramatic decrease after applying a magnetic field of 5 T, whereas the resistivity shows only a small change after applying the same field. Our results suggest that RuO2 layers are conducting and the magnetic field induced decrease of the overall thermopower is caused by the decrease of partial thermopower decrease associated with the spin entropy decrease of the carriers in the RuO2 layers.

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