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Onset of the Meissner effect at 65 K in FeSe thin film grown on Nb-doped SrTiO3 substrate

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  • Physics & Astronomy
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Abstract

We report the Meissner effect studies on an FeSe thin film grown on Nb-doped SrTiO3 substrate by molecular beam epitaxy. Two-coil mutual inductance measurement clearly demonstrates the onset of diamagnetic screening at 65 K, which is consistent with the gap opening temperature determined by previous angle-resolved photoemission spectroscopy results. The applied magnetic field causes a broadening of the superconducting transition near the onset temperature, which is the typical behavior for quasi-two-dimensional superconductors. Our results provide direct evidence that FeSe thin film grown on Nb-doped SrTiO3 substrate has an onset T C ~ 65 K, which is the highest among all iron-based superconductors discovered so far.

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Acknowledgments

This work was supported by the National Natural Science Foundation and Ministry of Science and Technology of China (2015CB921000 and 2012CB921402). Yihua Wang is partially supported by the Urbanek Fellowship of the Department of Applied Physics at Stanford University. K.A. Moler is supported by the Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division, under Contract DE-AC02-76SF00515.

Conflict of interest

The authors declare that they have no conflict of interest.

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    Authors and Affiliations

    1. State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing, 100084, China

      Zuocheng Zhang, Chang Liu & Yayu Wang

    2. State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai, 200433, China

      Yi-Hua Wang, Qi Song, Rui Peng & Donglai Feng

    3. Stanford Institute for Materials and Energy Science, Stanford University, Stanford, CA, 94305, USA

      Yi-Hua Wang & K. A. Moler

    4. Collaborative Innovation Center of Quantum Matter, Beijing, 100084, China

      Zuocheng Zhang, Chang Liu & Yayu Wang

    5. Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai, 200433, China

      Qi Song, Rui Peng & Donglai Feng

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    1. Zuocheng Zhang
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    2. Yi-Hua Wang
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    4. Chang Liu
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    6. K. A. Moler
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    7. Donglai Feng
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    Corresponding authors

    Correspondence to Donglai Feng or Yayu Wang.

    Additional information

    Zuocheng Zhang, Yi-Hua Wang and Qi Song contributed equally to this work.

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    Cite this article

    Zhang, Z., Wang, YH., Song, Q. et al. Onset of the Meissner effect at 65 K in FeSe thin film grown on Nb-doped SrTiO3 substrate. Sci. Bull. 60, 1301–1304 (2015). https://doi.org/10.1007/s11434-015-0842-8

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    • DOI: https://doi.org/10.1007/s11434-015-0842-8

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