Two-Dimensional fermi surfaces in LaRuPO and LaFePO versus three-dimensional fermi surfaces in LaFe 2P 2

Hiroshi Muranaka, Yusuke Doi, Keisuke Katayama, Hitoshi Sugawara, Rikio Settai, Fuminori Honda, Tatsuma D. Matsuda, Yoshinori Haga, Hiroshi Yamagami, Yoshichika Onuki

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We succeeded in observing the de Haas-van Alphen (dHvA) effect in LaRuPO, which is a sister compound of iron-based oxypnictide superconductors. All the detected dHvA frequencies, which correspond to the maximum or minimum cross-sectional areas of Fermi surfaces, approximately follow the 1/cos 6 dependence, where 6 is a field-tilted angle from the tetragonal [001] direction to the [100] and [110] directions. The Fermi surfaces are found to consist of two cylindrical hole Fermi surfaces and two cylindrical electron Fermi surfaces on the basis of the similar cylindrical Fermi surfaces in LaFePO and the result of energy band calculations. The cyclotron effective mass in LaRuPO is light, ranging from 0.55 to 0.86 mo, which is compared with a large cyclotron mass in LaFePO. These two-dimensional Fermi surfaces in LaRuPO and LaFePO are also compared with the three-dimensional Fermi surfaces in LaFe 2P 2.

Original languageEnglish
Article number053705
Journaljournal of the physical society of japan
Volume78
Issue number5
DOIs
Publication statusPublished - 2009 May
Externally publishedYes

Keywords

  • De haas-van alphen effect
  • Energy band calculation
  • Fermi surface
  • Lafe p
  • Lafepo
  • Larupo

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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