TY - JOUR
T1 - Two-dimensional and three-dimensional Fermi surfaces of superconducting BaFe2(As1-xPx)2 and their nesting properties revealed by angle-resolved photoemission spectroscopy
AU - Yoshida, T.
AU - Nishi, I.
AU - Ideta, S.
AU - Fujimori, A.
AU - Kubota, M.
AU - Ono, K.
AU - Kasahara, S.
AU - Shibauchi, T.
AU - Terashima, T.
AU - Matsuda, Y.
AU - Ikeda, H.
AU - Arita, R.
PY - 2011/3/18
Y1 - 2011/3/18
N2 - We have studied the three-dimensional shapes of the Fermi surfaces (FSs) of BaFe2(As1-xPx)2 (x=0.38), where superconductivity is induced by isovalent P substitution and by angle-resolved photoemission spectroscopy. Moderately strong electron mass enhancement has been identified for both the electron and hole FSs. Among two observed hole FSs, the nearly two-dimensional one shows good nesting with the outer two-dimensional electron FS, but its orbital character is different from the outer electron FS. The three-dimensional hole FS shows poor nesting with the electron FSs. The present results suggest that the three dimensionality and the difference in the orbital character weaken FS nesting while partial nesting among the outer electron FSs of dxy character and/or that within the three-dimensional hole FS becomes dominant, which may lead to the nodal superconductivity.
AB - We have studied the three-dimensional shapes of the Fermi surfaces (FSs) of BaFe2(As1-xPx)2 (x=0.38), where superconductivity is induced by isovalent P substitution and by angle-resolved photoemission spectroscopy. Moderately strong electron mass enhancement has been identified for both the electron and hole FSs. Among two observed hole FSs, the nearly two-dimensional one shows good nesting with the outer two-dimensional electron FS, but its orbital character is different from the outer electron FS. The three-dimensional hole FS shows poor nesting with the electron FSs. The present results suggest that the three dimensionality and the difference in the orbital character weaken FS nesting while partial nesting among the outer electron FSs of dxy character and/or that within the three-dimensional hole FS becomes dominant, which may lead to the nodal superconductivity.
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U2 - 10.1103/PhysRevLett.106.117001
DO - 10.1103/PhysRevLett.106.117001
M3 - Article
AN - SCOPUS:79952834165
VL - 106
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 11
M1 - 117001
ER -