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A New Method to Measure the Drift Mobility in Doped Manganite Films |
| WANG Li;CHEN Kun-Ji;HUANG Xin-Fan;YIN Jiang;HUANG Shao-Yun;XU Jun;LIU Zhi-Guo
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| National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093
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| Cite this article: |
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WANG Li, CHEN Kun-Ji, HUANG Xin-Fan et al 2001 Chin. Phys. Lett. 18 114-116 |
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Abstract The travelling wave method has been used to measure the drift mobility in the paramagnetic-insulator state of La0.75Sr0.11Ca0.14MnO3 films. The thermal activation of the drift mobility in manganites has been measured for the first time. The mobility varies from 2.5×10-2cm2/Vs at 310K to about 9.2×10-2cm2/Vs at 400K. The Arrhenius behaviours of the conductivity and drift mobility indicate that the transport process in manganites above the Curie temperature is dominated by the thermally assisted hopping of small polarons.
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| Keywords:
75.30.Un
62.80.+f
71.38.+i
73.50.Dn
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Published: 01 January 2001
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