• 제목/요약/키워드: Iron-pnictide

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Effect of Lattice Dynamics on Superconductivity in Iron Pnictides

  • Lee, C.H.;Kihou, K.;Horigane, K.;Tsutsui, S.;Fukuda, T.;Miyazawa, K.;Eisaki, H.;Iyo, A.;Fernandez-Diaz, M.T.;Yamaguchi, H.;Baron, A.Q.R.;Braden, M.;Yamada, K.
    • 한국초전도학회:학술대회논문집
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    • 한국초전도학회 2009년도 Korea Superconductivity Society Meeting 2009
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    • pp.4-4
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    • 2009

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광전자 분석 실험을 이용한 $Ba(Fe_{1-x}Ru_x)_2As_2$ 물질의 전자구조분석 (Electronic Structure Studies on $Ba(Fe_{1-x}Ru_x)_2As_2$ by Photoemission)

  • 정원식;김용관;김범영;;;엄만진;김준성;김창영
    • Progress in Superconductivity
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    • 제12권2호
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    • pp.99-103
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    • 2011

  • We performed angle resolved photoelectron spectroscopy (ARPES) studies on Ru doped $BaFe_2As_2$ with various Ru contents. Ru, which is doped into a parent compound $BaFe_2As_2$ and substitute Fe, does not donate or accept electrons. However, it induces superconductivity. From ARPES data along the high symmetry cuts and Fermi surface maps, we investigate the electron correlation and carrier density at the Fermi level. We observe that the Fermi velocity increases with Ru doping, suggesting reduction in electron correlation. In addition, we address issues on local vs. itinerant pictures for the magnetism in $BaFe_2As_2$.

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