High-temperature superconductivity in potassium-coated multilayer FeSe thin films

Nature Materials

Volumn 14, Issue 8, 2015, Pages 775-779

  Miyata, Y ^a   Nakayama, K ^a   Sugawara, K ^a   Sato, T ^a   Takahashi, T ^a  

^a TOHOKU UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

FILM PREPARATION; HIGH TEMPERATURE SUPERCONDUCTORS; MULTILAYER FILMS; POTASSIUM; SEMICONDUCTOR DOPING; SUPERCONDUCTING FILMS; SUPERCONDUCTING MATERIALS; ULTRATHIN FILMS;

DOPING RANGE; ELECTRON-DOPED; HIGH TEMPERATURE; HIGH-TEMPERATURE SUPERCONDUCTIVITY; IRON-BASED SUPERCONDUCTORS; SRTIO; SUPERCONDUCTING GAPS;

INTERFACES (MATERIALS);

EID: 84938073560     PISSN: 14761122     EISSN: 14764660     Source Type: Journal    
DOI: 10.1038/nmat4302     Document Type: Article

References (23)

1. Wang, Q. Y. et al. Interface-induced high-temperature superconductivity in single unit-cell FeSe films on SrTiO3. Chin. Phys. Lett. 29, 037402 (2012
2. Liu, D. F. et al. Electronic origin of high-temperature superconductivity in single-layer FeSe superconductor. Nature Commun. 3, 931 (2012
3. He, S. L. et al. Phase diagram and electronic indication of high-temperature superconductivity at 65K in single-layer FeSe films. Nature Mater. 12, 605-610 (2013
4. Tan, S. Y. et al. Interface-induced superconductivity and strain-dependent spin density wave in FeSe/SrTiO3 thin films. Nature Mater. 12, 634-640 (2013
5. Ge, G-F. et al. Superconductivity above 100K in single-layer FeSe films on doped SrTiO3. Nature Mater. 14, 285-289 (2015
6. Sun, Y. et al. High temperature superconducting FeSe films on SrTiO3 substrates. Sci. Rep. 4, 6040 (2014
7. Hsu, F. C. et al. Superconductivity in the PbO-type structure --FeSe. Proc. Natl Acad. Sci. USA 105, 14262-14264 (2008
8. Liu, X. et al. Dichotomy of the electronic structure and superconductivity between single-layer and double-layer FeSe/SrTiO3 films. Nature Commun. 5, 5047 (2014
9. Lee, P. A., Nagaosa, N. & Wen, X-G. Doping a Mott insulator: Physics of high-temperature superconductivity. Rev. Mod. Phys. 78, 17-85 (2006
10. Stewart, G. R. Superconductivity in iron compounds. Rev. Mod. Phys. 83, 1589-1652 (2011
11. Peng, R. et al. Tuning the band structure and superconductivity in single-layer FeSe by interface engineering. Nature Commun. 5, 5044 (2014
12. Peng, R. et al. Measurement of an enhanced superconducting phase and a pronounced anisotropy of the energy gap of a strained FeSe single layer in FeSe/Nb: SrTiO3/KTaO3 heterostructures using photoemission spectroscopy. Phys. Rev. Lett. 112, 107001 (2014
13. Hao, N. & Hu, J. Topological phases in the single-layer FeSe. Phys. Rev. X 4, 031053 (2014
14. Maletz, J. et al. Unusual band renormalization in the simplest iron-based superconductor FeSe1-x . Phys. Rev. B 89, 220506(R) (2014
15. Nakayama, K. et al. Reconstruction of band structure induced by electronic nematicity in an FeSe superconductor. Phys. Rev. Lett. 113, 237001 (2014
16. Matsui, H. et al. BCS-Like Bogoliubov quasiparticles in high-Tc superconductors observed by angle-resolved photoemission spectroscopy. Phys. Rev. Lett. 90, 217002 (2003
17. Norman, M. R., Randeria, M., Ding, H. & Campuzano, J. C. Phenomenology of the low-energy spectral function in high-Tc superconductors. Phys. Rev. B 57, R11093-R11096 (1998
18. Haviland, D. B., Liu, Y. & Goldman, A. M. Onset of superconductivity in the two-dimensional limit. Phys. Rev. Lett. 62, 2180-2183 (1989
19. Song, C. L. et al. Molecular-beam epitaxy and robust superconductivity of stoichiometric FeSe crystalline films on bilayer graphene. Phys. Rev. B 84, 020503(R) (2011
20. Xiang, Y. Y., Wang, F., Wang, D., Wang, Q. H. & Lee, D. H. High-temperature superconductivity at the FeSe/SrTiO3 interface. Phys. Rev. B 86, 134508 (2012
21. Lee, J. J. et al. Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3. Nature 515, 245-248 (2014
22. Cao, H. Y., Tan, S. Y., Xiang, H. J., Feng, D. L. & Gong, X. G. Interfacial e-ects on the spin density wave in FeSe/SrTiO3 thin films. Phys. Rev. B 89, 014501 (2014
23. Bozovic, I. & Ahn, C. A new frontier for superconductivity. Nature Phys. 10, 892-895 (2014