BaT 2 As 2 single crystals ( T = Fe , Co , Ni ) and superconductivity upon Co - doping
نویسندگان
چکیده
Article history: Available online 19 March 2009 PACS: 74.70. b 81.10. h 74.25. q 74.25.Ha 74.25.Jb
منابع مشابه
Measurement of a sign-changing two-gap superconducting phase in electron-doped Ba(Fe(1-x)Co(x))2As2 single crystals using scanning tunneling spectroscopy.
Scanning tunneling spectroscopic studies of Ba(Fe(1-x)Co(x))(2)As(2) (x=0.06, 0.12) single crystals reveal direct evidence for predominantly two-gap superconductivity. These gaps decrease with increasing temperature and vanish above the superconducting transition T(c). The two-gap nature and the slightly doping- and energy-dependent quasiparticle scattering interferences near the wave vectors (...
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