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 , 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.
- Received 28 May 2014
- Revised 17 September 2014
DOI:https://doi.org/10.1103/PhysRevB.90.144517
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