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Interface-Induced High-Temperature Superconductivity in Single Unit-Cell FeSe Films on SrTiO3

Journal Article


Abstract


  • We report high transition temperature superconductivity in one unit-cell (UC) thick FeSe films grown on a Seetched

    SrTiO3(001) substrate by molecular beam epitaxy (MBE). A superconducting gap as large as 20 meV and

    the magnetic field induced vortex state revealed by in situ scanning tunneling microscopy (STM) suggest that

    the superconductivity of the 1 UC FeSe films could occur around 77 K. The control transport measurement shows

    that the onset superconductivity temperature is well above 50 K. Our work not only demonstrates a powerful

    way for finding new superconductors and for raising ?C , but also provides a well-defined platform for systematic

    studies of the mechanism of unconventional superconductivity by using different superconducting materials and

    substrates.

UOW Authors


  •   Wang, Qingyan (external author)
  •   Li, Zhi
  •   Zhang, Wenhao (external author)
  •   Zhang, Zuo-Cheng (external author)
  •   Zhang, Jin (external author)
  •   Li, Wei (external author)
  •   Ding, Hao (external author)
  •   Ou, Yun-Bo (external author)
  •   Deng, Peng (external author)
  •   Chang, Kai (external author)
  •   Wen, Jing (external author)
  •   Song, Canli (external author)
  •   He, Ke (external author)
  •   Jia, Jin-Feng (external author)
  •   Ji, Shuaihua (external author)
  •   Wang, Ya-Yu (external author)
  •   Wang, Lili (external author)
  •   Chen, Xi (external author)
  •   Ma, Xu-Cun (external author)
  •   Xue, Qi-Kun (external author)

Publication Date


  • 2012

Geographic Focus


Citation


  • Wang, Q., Li, Z., Zhang, W., Zhang, Z., Zhang, J., Li, W., Ding, H., Ou, Y., Deng, P., Chang, K., Wen, J., Song, C., He, K., Jia, J., Ji, S., Wang, Y., Wang, L., Chen, X., Ma, X. & Xue, Q. (2012). Interface-Induced High-Temperature Superconductivity in Single Unit-Cell FeSe Films on SrTiO3. Chinese Physics Letters, 29 (3), 037402-1-037402-4.

Scopus Eid


  • 2-s2.0-84863230639

Start Page


  • 037402-1

End Page


  • 037402-4

Volume


  • 29

Issue


  • 3

Place Of Publication


  • United Kingdom

Abstract


  • We report high transition temperature superconductivity in one unit-cell (UC) thick FeSe films grown on a Seetched

    SrTiO3(001) substrate by molecular beam epitaxy (MBE). A superconducting gap as large as 20 meV and

    the magnetic field induced vortex state revealed by in situ scanning tunneling microscopy (STM) suggest that

    the superconductivity of the 1 UC FeSe films could occur around 77 K. The control transport measurement shows

    that the onset superconductivity temperature is well above 50 K. Our work not only demonstrates a powerful

    way for finding new superconductors and for raising ?C , but also provides a well-defined platform for systematic

    studies of the mechanism of unconventional superconductivity by using different superconducting materials and

    substrates.

UOW Authors


  •   Wang, Qingyan (external author)
  •   Li, Zhi
  •   Zhang, Wenhao (external author)
  •   Zhang, Zuo-Cheng (external author)
  •   Zhang, Jin (external author)
  •   Li, Wei (external author)
  •   Ding, Hao (external author)
  •   Ou, Yun-Bo (external author)
  •   Deng, Peng (external author)
  •   Chang, Kai (external author)
  •   Wen, Jing (external author)
  •   Song, Canli (external author)
  •   He, Ke (external author)
  •   Jia, Jin-Feng (external author)
  •   Ji, Shuaihua (external author)
  •   Wang, Ya-Yu (external author)
  •   Wang, Lili (external author)
  •   Chen, Xi (external author)
  •   Ma, Xu-Cun (external author)
  •   Xue, Qi-Kun (external author)

Publication Date


  • 2012

Geographic Focus


Citation


  • Wang, Q., Li, Z., Zhang, W., Zhang, Z., Zhang, J., Li, W., Ding, H., Ou, Y., Deng, P., Chang, K., Wen, J., Song, C., He, K., Jia, J., Ji, S., Wang, Y., Wang, L., Chen, X., Ma, X. & Xue, Q. (2012). Interface-Induced High-Temperature Superconductivity in Single Unit-Cell FeSe Films on SrTiO3. Chinese Physics Letters, 29 (3), 037402-1-037402-4.

Scopus Eid


  • 2-s2.0-84863230639

Start Page


  • 037402-1

End Page


  • 037402-4

Volume


  • 29

Issue


  • 3

Place Of Publication


  • United Kingdom