Original Articles |
|
|
|
|
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
|
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093
|
|
Cite this article: |
WANG Li, CHEN Kun-Ji, HUANG Xin-Fan et al 2001 Chin. Phys. Lett. 18 114-116 |
|
|
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.
|
Keywords:
75.30.Un
62.80.+f
71.38.+i
73.50.Dn
|
|
Published: 01 January 2001
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|