title: Quasi-two-dimensional Fermi surfaces and coherent interlayer transport in KFe₂As₂.
abstract: We report the results of the angular-dependent magnetoresistance oscillations (AMROs), which can determine the shape of bulk Fermi surfaces (FSs) in quasi-two-dimensional (Q2D) systems, in a highly hole-doped Fe-based superconductor KFe2As2 with Tc ≈ 3.7  K. From the AMROs, we determined the two Q2D FSs with rounded-square cross sections, correspond to 12% and 17% of the first Brillouin zone. The rounded-squared shape of the FS cross section is also confirmed by the analyses of the interlayer transport under in-plane fields. From the obtained FS shape, we infer the character of the 3d orbitals that contribute to the FSs.
authors.affiliation: National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan.
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authors.lastname: Kimata
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authors.lastname: Terashima
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authors.lastname: Kurita
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authors.lastname: Satsukawa
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authors.lastname: Lee
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authors.lastname: Kito
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authors.lastname: Iyo
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authors.lastname: Saito
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authors.lastname: Fukazawa
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authors.lastname: Kohori
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authors.initials: H
authors.lastname: Harima
authors.forename: S
authors.initials: S
authors.lastname: Uji