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Publications (4)

cond-mat.supr-con2014

Fermi Surface of KFe $_{2}$ As $_{2}$ from Quantum Oscillations in Magnetostriction

D. A. Zocco, K. Grube, F. Eilers +2

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 $H$ u…

cond-mat.supr-con2013

Pauli-Limited Multiband Superconductivity in KFe2As2

D. A. Zocco, K. Grube, F. Eilers +2

The upper critical field Hc2(T) of the multiband superconductor KFe2As2 has been studied via low-temperature thermal expansion and magnetostriction measurements. We present compell…

cond-mat.supr-con2012

Electronic structure of single-crystalline Sr(Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$ probed by x-ray absorption spectroscopy: Evidence for isovalent substitution of Fe $^{2 +}$ by Co $^{2 +}$

M. Merz, F. Eilers, Th. Wolf +3

The substitutional dependence of valence and spin-state configurations of Sr(Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$ ( $x =$ 0, 0.05, 0.11, 0.17, and 0.38) is investigated with near-edge x-ray…

cond-mat.supr-con2013

Lack of coupling between superconductivity and orthorhombic distortion in stoichiometric single-crystalline FeSe

A. E. BÃ¶hmer, F. Hardy, F. Eilers +5

The coupling between superconductivity and othorhombic distortion is studied in vapor-grown FeSe single crystals using high-resolution thermal-expansion measurements. In contrast t…