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EPL Association, European Physical Society Letters, 2(113), p. 27002, 2016

DOI: 10.1209/0295-5075/113/27002

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Influence of Lifshitz transitions and correlation effects on the scattering rates of the charge carriers in iron-based superconductors

Journal article published in 2016 by J. Fink ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Minimum model calculations on the co-action of hole vanishing Lifshitz transitions and correlation effects in ferropnictides are presented. The calculations predict non-Fermi-liquid behaviour and huge mass enhancements of the charge carriers at the Fermi level. The findings are compared with recent ARPES experiments and with measurements of transport and thermal properties of ferropnictides. The results from the calculation can be also applied to other unconventional superconductors and question the traditional view of quantum-critical points.