Fermi surface and mass enhancement in KFe2As2 from de Haas-van Alphen effect measurements

Taichi Terashima, Motoi Kimata, Nobuyuki Kurita, Hidetaka Satsukawa, Atsushi Harada, Kaori Hazama, Motoharu Imai, Akira Sato, Kunihiro Kihou, Chul Ho Lee, Hijiri Kito, Hiroshi Eisaki, Akira Iyo, Taku Saito, Hideto Fukazawa, Yoh Kohori, Hisatomo Harima, Shinya Uji

Research output: Contribution to journalArticlepeer-review

92 Citations (Scopus)

Abstract

We report on a band structure calculation and de Haas-van Alphen measure ements of KFe2As2. Three cylindrical Fermi surfaces are found. Effective masses of electrons range from 6 to 18me, m e being the free electron mass. Remarkable discrepancies between the calculated and observed Fermi surface areas and the large mass enhancement (≳3) highlight the importance of electronic correlations in determining the electronic structures of iron pnicitide superconductors.

Original languageEnglish
Article number053702
Journaljournal of the physical society of japan
Volume79
Issue number5
DOIs
Publication statusPublished - 2010 May 1
Externally publishedYes

Keywords

  • De haas-van Alphen effect
  • Fermi surface
  • Iron pnictide superconductors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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