| Reversal transient laser-induced voltages in La2/3Ca1/3MnO3 films |
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| 作者姓名： | 赵昆 何萌 吕惠宾 |
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| 作者单位： | Department of Mathematics and Physics, China University
of Petroleum, Beijing 102249, China;Beijing National Laboratory for Condensed Matter Physics,
Institute of Physics,
Chinese Academy of Sciences, Beijing 100080, China;International Center for Materi;Beijing National Laboratory for Condensed Matter Physics,
Institute of Physics,
Chinese Academy of Sciences, Beijing 100080, China;Beijing National Laboratory for Condensed Matter Physics,
Institute of Physics,
Chinese Academy of Sciences, Beijing 100080, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China
(Grant Nos~60576015 and 50672132). |
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| 摘 要： | This paper reports that the transient laser-induced voltages have been observed in La2/3Ca1/3MnO3 thin films on MgO （001） in the absence of an applied current. A peak voltage of - 0.15 V was detected in response to 0.015J pulse of 308 nm laser. It is demonstrated that the signal polarity is reversed when the films are irradiated through the substrate rather than at the air/film interface. Off-diagonal thermoelectricity may support the inversion of the signal when the irradiation direction is reversed.
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| 关 键 词： | 水锰矿氧化物 La2/3Ca1/3MnO3薄膜 光伏效应 激光诱发 瞬态反向电压 |
| 收稿时间： | 2006-08-19 |
| 修稿时间： | 2006-08-192006-10-10 |
Reversal transient laser-induced voltages in La2/3Ca1/3MnO3 films |
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| Zhao Kun, He Meng, L&#; Hui-Bin.Reversal transient laser-induced voltages in La2/3Ca1/3MnO3 films[J].Chinese Physics B,2007,16(3):840-842. |
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| Authors: | Zhao Kun He Meng L&#; Hui-Bin |
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| Institution: | 1.Department of Mathematics and Physics, China University of Petroleum, Belting 102249, China ;2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China ;3. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China |
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| Abstract: | This paper reports that the transient laser-induced voltages have been observed in La2/3Ca1/3MnO3 thin films on MgO (001) in the absence of an applied current. A
peak voltage of \sim 0.15 V was detected in response to 0.015 J pulse of
308 nm laser. It is demonstrated that the signal polarity is reversed when
the films are irradiated through the substrate rather than at the air/film
interface. Off-diagonal thermoelectricity may support the inversion of the
signal when the irradiation direction is reversed. |
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| Keywords: | manganite oxide thin film photovoltaic effect |
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