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arXiv:1401.4403 [cond-mat.supr-con]AbstractReferencesReviewsResources

Fermi Surface of KFe$_2$As$_2$ from Quantum Oscillations in Magnetostriction

D. A. Zocco, K. Grube, F. Eilers, T. Wolf, H. v. Löhneysen

Published 2014-01-17Version 1

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 $H$ up to 14 T. For $H \parallel c$, 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 $H \parallel a$, we observed a small orbit at a cyclotron frequency of 64 T, characterized by an effective mass of $\sim 0.8 m_e$, supporting the presence of a three-dimensional pocket at the Z-point.

Comments: SCES Conference, Tokyo 2013
Journal: JPS Conf. Proc. 3, 015007 (2014)
Categories: cond-mat.supr-con
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