| Magneto-optical effect of La0.7Ca0.3MnO3 at low temperature |
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| 引用本文： | WAN Fan HAN Jia-Guang ZHU Zhi-Yuan. Magneto-optical effect of La0.7Ca0.3MnO3 at low temperature[J]. 核技术(英文版), 2006, 17(1): 24-28. DOI: 10.1016/S1001-8042(06)60006-7 |
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| 作者姓名： | WAN Fan HAN Jia-Guang ZHU Zhi-Yuan |
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| 作者单位： | [1]Shanghai Institute of Applied Physics, the Chinese Academy of Sciences, Shanghai 201800, China [2]Graduate School of the Chinese Academy of Sciences, Beijing 100049, China |
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| 基金项目： | Supported by the Major Project of Knowledge Innovation Project of Chinese Academy of Science （No. KJCX2SW-N02） |
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| 摘 要： | 1 Introduction Since the recent discovery of the colossal mag-neto resistance (CMR) phenomenon in hole-dopedmanganite, La1-xCaxMnO3 has been widely studied onaccount of their unique electronic and magnetic prop-erties, which vary with doping concentrations. Fordoping concentration x from 0.2 to 0.5, the materialsshow a transition from a paramagnetic insulator to aferromagnetic metal near the Curie temperature Tc [1, 2]Such insulator-metal (IM) transition phenomena con-necting with the CM…
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| 关 键 词： | 磁光效应 La0.7Ca0.3MnO3 低温 Kerr效应 |
| 收稿时间： | 2005-07-05 |
Magneto-optical effect of La0.7Ca0.3MnO3 at low temperature |
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| WAN Fan,HAN Jia-Guang,ZHU Zhi-Yuan. Magneto-optical effect of La0.7Ca0.3MnO3 at low temperature[J]. , 2006, 17(1): 24-28. DOI: 10.1016/S1001-8042(06)60006-7 |
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| Authors: | WAN Fan HAN Jia-Guang ZHU Zhi-Yuan |
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| Affiliation: | 1. Shanghai Institute of Applied Physics,the Chinese Academy of Sciences,Shanghai 201800,China;Graduate School of the Chinese Academy of Sciences,Beijing 100049,China
2. Shanghai Institute of Applied Physics,the Chinese Academy of Sciences,Shanghai 201800,China |
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| Abstract: | The magneto-optical Kerr effect of La0.7Ca0.3MnO3 at low temperature in far-infrared terahertz and mid-infrared region from 0.2 to 1.2 eV is theoretically investigated by means of the Drude model. The complex conductivity and dielectric constants are obtained. The spectra of Kerr rotation with different external magnetic fields B and temperatures T are numerically analyzed. A large Kerr rotation in mid-'infrared region could be explained as the incoherent hopping motion of polarons. |
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| Keywords: | Kerr effect Ellipticity La0.7Cao.3MnO3 |
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