| Observation of lateral long range order in superconducting FeTe thin films |
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| 作者姓名： | 李位勇 韩烨 王焕华 曹立新 贾全杰 陈雨 姜晓明 董成 许波 赵柏儒 |
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| 作者单位： | National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China;National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China;Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China;Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China;National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China;National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China |
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| 基金项目： | Project supported by the National Basic Research Program of China (Grant Nos. 2006CB921107 and 2010CB630704) and the National Natural Science Foundation of China (Grant No. 10774165). |
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| 摘 要： | <正>We find that the superconductivity in the thin films of the formerly believed non-superconducting parent compound FeTe is accompanied by an emergence of second order with a correlation length of 742 nm and 258 nm at 10 K and 300 K,respectively.The structural phase transition found in iron pnictide superconductors,in non-superconducting FeTe bulk samples,and in FeSe superconducting thin films is not observed in the superconducting FeTe thin films.The interplay between superconductivity and long range order may suggest the crucial role of competition between electronic localization and itinerancy which leads to strong quantum fluctuations in the FeTe system.
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| 关 键 词： | superconducting materials surface phase transitions and critical phenomena superconducting films x-ray determination of structures |
Observation of lateral long range order in superconducting FeTe thin films |
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| Li Wei-Yong,Han Ye,Wang Huan-Hu,Cao Li-Xin,Jia Quan-Jie,Chen Yu,Jiang Xiao-Ming,Dong Cheng,Xu Bo and Zhao Bai-Ru.Observation of lateral long range order in superconducting FeTe thin films[J].Chinese Physics B,2010,19(8):18-23. |
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| Authors: | Li Wei-Yong Han Ye Wang Huan-Hu Cao Li-Xin Jia Quan-Jie Chen Yu Jiang Xiao-Ming Dong Cheng Xu Bo and Zhao Bai-Ru |
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| Institution: | [1]National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China [2]Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | We find that the superconductivity in the thin films of the formerly believed non-superconducting parent compound FeTe is accompanied by an emergence of second order with a correlation length of 742 nm and 258 nm at 10 K and 300 K, respectively. The structural phase transition found in iron pnictide superconductors, in non-superconducting FeTe bulk samples, and in FeSe superconducting thin films is not observed in the superconducting FeTe thin films. The interplay between superconductivity and long range order may suggest the crucial role of competition between electronic localization and itinerancy which leads to strong quantum fluctuations in the FeTe system. |
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| Keywords: | superconducting materials surface phase transitions and critical phenomena superconducting films x-ray determination of structures |
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