Yuki Nagai et al 2008 New J. Phys. 10 103026 doi:10.1088/1367-2630/10/10/103026
Nuclear magnetic relaxation and superfluid density in Fe-pnictide superconductors: an anisotropic ±s-wave scenario
Yuki Nagai1,4, Nobuhiko Hayashi2,3, Noriyuki Nakai2,3, Hiroki Nakamura2, Masahiko Okumura2,3 and Masahiko Machida2,3
Show affiliationsWe discuss the nuclear magnetic relaxation rate and the superfluid density with the use of the effective five-band model by Kuroki et al (2008 Phys. Rev. Lett. 101 087004) in Fe-based superconductors. We show that a fully gapped anisotropic ±s-wave superconductivity consistently explains experimental observations. In our phenomenological model, the gaps are assumed to be anisotropic on the electron-like β Fermi surfaces around the M point, where the maximum of the anisotropic gap is about four times larger than the minimum.
- PACS
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74.25.Nf Response to electromagnetic fields (nuclear magnetic resonance, surface impedance, etc.)
74.70.Dd Ternary, quaternary and multinary compounds (including Chevrel phases, borocarbides, etc.)
74.20.De Phenomenological theories (two-fluid, Ginzburg-Landau, etc.)
71.18.+y Fermi surface: calculations and measurements; effective mass, g factor
- Subjects
- Dates
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Issue 10 (October 2008)
Received 11 September 2008
Published 31 October 2008
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Nuclear magnetic relaxation and superfluid density in Fe-pnictide superconductors: an anisotropic ±s-wave scenario
Yuki Nagai et al 2008 New J. Phys. 10 103026
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Hyperbolic space cosmologies
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Theoretical uncertainties in sparticle mass predictions from computational tools
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