Impurity Effects on Spin Dynamics in Magnetic and Superconducting Iron Pnictides and Chalcogenides

Published

January 1, 2017

Author(s)

M. A. Surmach, Dimitri Feys, J. T. Park, Jose Rodriguez Rivera, D. L. Sun, Y. Liu, C. T. Lin, D. S. Inosov

Abstract

In this paper we summarize the effects of magnetic and nonmagnetic impurities on the spin dynamics in Fe-based superconductors are their parent compounds. The effects of chemical substitution, vacancies, and disorder on the suppression or stabilization of superconductivity and spin-density-wave phases are reviewed in the context of recent neutron-spectroscopy measurements of spin excitations. We also present new results on the structure of magnetic fluctuations in BaFe₂As₂ single crystals doped with Mn local moments and discuss them in relationship to the previously reported (π,π) branch of magnetic fluctuations.

Citation

Physica Status Solidi B-Basic Solid State Physics

Volume

254

Issue

1

Pub Type

Journals

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Keywords

Neutron Scattering, Superconductivity

Citation

Surmach, M. , Feys, D. , Park, J. , Rodriguez Rivera, J. , Sun, D. , Liu, Y. , Lin, C. and Inosov, D. (2017), Impurity Effects on Spin Dynamics in Magnetic and Superconducting Iron Pnictides and Chalcogenides, Physica Status Solidi B-Basic Solid State Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=920730 (Accessed October 11, 2025)