Journal
PHYSICAL REVIEW B
Volume 93, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.93.144515
Keywords
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Funding
- Alexander von Humboldt Foundation
- German Federal Ministry of Education and Research within the project ERA
- EU [146-MAGNES, 609556]
- Ministry of Education and Science of the Russian Federation in the frames of the Increase Competitiveness Program of NUST MISiS [K2-2014-036]
- Russian Foundation for Basic Research [14-02-92002]
- government of the Russian Federation [02.A03.21.0006]
- National Academy of Sciences of Ukraine
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A rise in the superconducting critical temperature T-c of more than two times (exceeding 20 K) is discovered in point contacts created between iron chalcogenide FeSe single crystals and Cu. The possible reasons for such a T-c increase in point contacts are discussed. The most likely cause for this may be the interfacial carrier doping and/or interfacial enhanced electron-phonon interaction.
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