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- Title
Evidence of cooperative effect on the enhanced superconducting transition temperature at the FeSe/SrTiO<sub>3</sub> interface.
- Authors
Song, Q.; Yu, T. L.; Lou, X.; Xie, B. P.; Xu, H. C.; Wen, C. H. P.; Yao, Q.; Zhang, S. Y.; Zhu, X. T.; Guo, J. D.; Peng, R.; Feng, D. L.
- Abstract
At the interface between monolayer FeSe films and SrTiO3 substrates the superconducting transition temperature (Tc) is unexpectedly high, triggering a surge of excitement. The mechanism for the Tc enhancement has been the central question, as it may present a new strategy for seeking out higher Tc materials. To reveal this enigmatic mechanism, by combining advances in high quality interface growth, 16O ↔18O isotope substitution, and extensive data from angle resolved photoemission spectroscopy, we provide striking evidence that the high Tc in FeSe/SrTiO3 is the cooperative effect of the intrinsic pairing mechanism in the FeSe and interactions between the FeSe electrons and SrTiO3 phonons. Furthermore, our results point to the promising prospect that similar cooperation between different Cooper pairing channels may be a general framework to understand and design high-temperature superconductors. The mechanism of enhanced superconducting transition temperature (Tc) at the FeSe/SrTiO3 interface remains enigmatic. Here, Song and Yu et al. reveal the evidence of cooperation between intrinsic pairing interaction in FeSe and interfacial electron-phonon coupling to enhance the Tc at the FeSe/SrTiO3 interface.
- Publication
Nature Communications, 2019, Vol 10, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-019-08560-z