Universal linear-temperature dependence of static magnetic susceptibility in iron-pnictides

Details Universal linear-temperature dependence of static magnetic susceptibility in iron-pnictides Universal linear-temperature dependence of static magnetic susceptibility in iron-pnictides

2008-09-23

arxiv.org/abs/0809.3874v3

EPL 86, 37006 (2009).

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures

Scientific paper

10.1209/0295-5075/86/37006

A universal linear-temperature dependence of the uniform magnetic susceptibility has been observed in the nonmagnetic normal state of iron-pnictides. This non-Pauli and non-Curie-Weiss-like paramagnetic behavior cannot be understood within a pure itinerant picture. We argue that it results from the existence of a wide antiferromagnetic fluctuation window in which the local spin-density-wave correlations exist but the global directional order has not been established yet.

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