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.
- De haas-van Alphen effect
- Fermi surface
- Iron pnictide superconductors
ASJC Scopus subject areas
- Physics and Astronomy(all)