Year: 2014
Type: conference-paper
Abstract: We present a study of the Fermi surface of KFe 2 As 2 single crystals.Quantum oscillations were observed in magnetostriction measured down to 50 mK and in magnetic fields µ 0 H up to 14 T.For H c, the calculated effective masses are in agreement with recent de Haas-van Alphen and ARPES experiments, showing enhanced values with respect to the ones obtained from previous band calculations.For H a, we observed a small orbit at a cyclotron frequency of 64 T, characterized by an effective mass of ∼ 0.8 m e , supporting the presence of a three-dimensional pocket at the Z-point.
Authors: Diego A. Zocco, Kai Grube, Felix Eilers, Thomas Wolf, Hilbert v. Löhneysen
Institution: Karlsruhe Institute of Technology
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
Funder: Deutsche Forschungsgemeinschaft
Award: G2438661295
OpenAlex ID: W1990366483