1.

75As nuclear magnetic resonance study of antiferromagnetic fluctuations in the normal state of LiFeAs

We present a detailed study of 75As NMR Knight shift and spin-lattice relaxation rate 1/T1 in the normal state of stoichiometric polycrystalline LiFeAs, one of the six members of newly discovered family of Fe-based superconductors. Our analysis of the Korringa relation suggests that LiFeAs exhibits moderate to strong antiferromagnetic fluctuations.

COBISS.SI-ID: 23578919

2.

Coexistence of localized and itinerant electronic states in the multiband iron-based superconductor FeSe0.42Te0.58

We report X-band electron paramagnetic resonance and 125Te and 77Se NMR measurements on single-crystalline superconducting FeSe0.42Te0.58 with Tc=11.5 K. The data provide indications for the coexistence of intrinsic localized and itinerant electronic states.

COBISS.SI-ID: 24079399