Angle-dependent Magnetoresistance Oscillations in KFe$_{2}$As$_{2}$

ORAL

Abstract

We report the results of angular-dependent magnetoresistance oscillations (AMRO) in the Fe-Pnictide superconductor KFe$_{2}$As$_{2}$. The two series of AMRO structures are observed, suggesting the existence of two quasi-two-dimensional Fermi surfaces (Q2D-FSs). The obtained FS cross sectional areas correspond to 11 and 15{\%} of the first Brillouin zone, and our results indicate that the cross sections of the Q2D-FSs are rounded square. The diagonal axes of the rounded squares are parallel to the a-axis in both FSs. These results are essentially consistent with the recent quantum oscillations and photoemission spectroscopy measurements.

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Authors

  • Motoi Kimata

    • National Institute for Materials Science

  • Taichi Terashima

  • Nobuyuki Kurita

  • Hidetaka Satsukawa

  • Atsushi Harada

  • Kouta Kodama

  • Akira Sato

  • Motoharu Imai

  • Shinya Uji

    • National Institute for Materials Science, Tsukuba, Japan

  • Kunihiro Kihou

  • Chul-Ho Lee

  • Hijiri Kito

  • Hiroshi Eisaki

  • Akira Iyo

    • National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan

  • Hideo Fukazawa

  • Yoh Kohori

    • Department of Physics, Chiba University, Chiba, Japan

  • Hisatomo Harima

    • Department of Physics, Graduate School of Science, Kobe University, Kobe, Japan