Anomalous Fermi surface in FeSe seen by Shubnikov–de Haas oscillation measurements

Taichi Terashima, Naoki Kikugawa, Andhika Kiswandhi, Eun-Sang Choi, James S. Brooks, Shigeru Kasahara, Tatsuya Watashige, Hiroaki Ikeda, Takasada Shibauchi, Yuji Matsuda, Thomas Wolf, Anna E. Böhmer, Frédéric Hardy, Christoph Meingast, Hilbert v. Löhneysen, Michi-To Suzuki, Ryotaro Arita, and Shinya Uji
Phys. Rev. B 90, 144517 – Published 29 October 2014

Abstract

We have observed Shubnikov–de Haas oscillations in FeSe. The Fermi surface deviates significantly from predictions of band-structure calculations and most likely consists of one electron and one hole thin cylinder. The carrier density is in the order of 0.01 carriers/Fe, an order of magnitude smaller than predicted. Effective Fermi energies as small as 3.6 meV are estimated. These findings call for elaborate theoretical investigations incorporating both electronic correlations and orbital ordering.

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  • Received 28 May 2014
  • Revised 17 September 2014

DOI:https://doi.org/10.1103/PhysRevB.90.144517

©2014 American Physical Society

Authors & Affiliations

Taichi Terashima1, Naoki Kikugawa1, Andhika Kiswandhi2, Eun-Sang Choi2, James S. Brooks2, Shigeru Kasahara3, Tatsuya Watashige3, Hiroaki Ikeda3,4, Takasada Shibauchi3,5, Yuji Matsuda3, Thomas Wolf6, Anna E. Böhmer6, Frédéric Hardy6, Christoph Meingast6, Hilbert v. Löhneysen6, Michi-To Suzuki7, Ryotaro Arita7, and Shinya Uji1

  • 1National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan
  • 2National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
  • 3Department of Physics, Kyoto University, Kyoto 606-8502, Japan
  • 4Department of Physical Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
  • 5Department of Advanced Materials Science, University of Tokyo, Chiba 277-8561, Japan
  • 6Institute of Solid State Physics (IFP), Karlsruhe Institute of Technology, D-76021 Karlsruhe, Germany
  • 7RIKEN Centre for Emergent Matter Science, Wako 351-0198, Japan

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Issue

Vol. 90, Iss. 14 — 1 October 2014

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