中国物理B ›› 2016, Vol. 25 ›› Issue (7): 77404-077404.doi: 10.1088/1674-1056/25/7/077404

所属专题: Virtual Special Topic — High temperature superconductivity

• SPECIAL TOPIC—Non-equilibrium phenomena in soft matters • 上一篇    下一篇

Synthesis of large FeSe superconductor crystals via ion release/introduction and property characterization

Dongna Yuan(苑冬娜), Yulong Huang(黄裕龙), Shunli Ni(倪顺利), Huaxue Zhou(周花雪), Yiyuan Mao(毛义元), Wei Hu(胡卫), Jie Yuan(袁洁), Kui Jin(金魁), Guangming Zhang(张广铭), Xiaoli Dong(董晓莉), Fang Zhou(周放)   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, China
  • 收稿日期:2016-05-25 修回日期:2016-05-30 出版日期:2016-07-05 发布日期:2016-07-05
  • 通讯作者: Xiaoli Dong, Fang Zhou E-mail:dong@iphy.ac.cn;fzhou@iphy.ac.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11574370, 11274358, and 11190020), the National Basic Research Program of China (Grant No. 2013CB921700), and the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No. XDB07020100).

Synthesis of large FeSe superconductor crystals via ion release/introduction and property characterization

Dongna Yuan(苑冬娜)1, Yulong Huang(黄裕龙)1, Shunli Ni(倪顺利)1, Huaxue Zhou(周花雪)1, Yiyuan Mao(毛义元)1, Wei Hu(胡卫)1, Jie Yuan(袁洁)1, Kui Jin(金魁)1,2, Guangming Zhang(张广铭)3, Xiaoli Dong(董晓莉)1,2, Fang Zhou(周放)1,2   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, China
  • Received:2016-05-25 Revised:2016-05-30 Online:2016-07-05 Published:2016-07-05
  • Contact: Xiaoli Dong, Fang Zhou E-mail:dong@iphy.ac.cn;fzhou@iphy.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11574370, 11274358, and 11190020), the National Basic Research Program of China (Grant No. 2013CB921700), and the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No. XDB07020100).

摘要:

Large superconducting FeSe crystals of (001) orientation have been prepared via a hydrothermal ion release/introduction route for the first time. The hydrothermally derived FeSe crystals are up to 10 mm×5 mm×0.3 mm in dimension. The pure tetragonal FeSe phase has been confirmed by x-ray diffraction (XRD) and the composition determined by both inductively coupled plasma atomic emission spectroscopy (ICP-AES) and energy dispersive x-ray spectroscopy (EDX). The superconducting transition of the FeSe samples has been characterized by magnetic and transport measurements. The zero-temperature upper critical field Hc2 is calculated to be 13.2-16.7 T from a two-band model. The normal-state cooperative paramagnetism is found to be predominated by strong spin frustrations below the characteristic temperature Tsn, where the Ising spin nematicity has been discerned in the FeSe superconductor crystals as reported elsewhere.

关键词: FeSe superconductor, hydrothermal growth via ion release/introduction, upper critical field, spin frustrations

Abstract:

Large superconducting FeSe crystals of (001) orientation have been prepared via a hydrothermal ion release/introduction route for the first time. The hydrothermally derived FeSe crystals are up to 10 mm×5 mm×0.3 mm in dimension. The pure tetragonal FeSe phase has been confirmed by x-ray diffraction (XRD) and the composition determined by both inductively coupled plasma atomic emission spectroscopy (ICP-AES) and energy dispersive x-ray spectroscopy (EDX). The superconducting transition of the FeSe samples has been characterized by magnetic and transport measurements. The zero-temperature upper critical field Hc2 is calculated to be 13.2-16.7 T from a two-band model. The normal-state cooperative paramagnetism is found to be predominated by strong spin frustrations below the characteristic temperature Tsn, where the Ising spin nematicity has been discerned in the FeSe superconductor crystals as reported elsewhere.

Key words: FeSe superconductor, hydrothermal growth via ion release/introduction, upper critical field, spin frustrations

中图分类号:  (Pnictides and chalcogenides)

  • 74.70.Xa
81.10.-h (Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation) 74.25.Op (Mixed states, critical fields, and surface sheaths) 75.10.Jm (Quantized spin models, including quantum spin frustration)