Impact of spin correlations on resistivity and microwave absorption of Ba(Fe 1− x  Co  x  ) 2 As 2

Yu. I. Talanov; I. I. Gimazov; D. E. Zhelezniakova

doi:10.26907/mrsej-24110

Impact of spin correlations on resistivity and microwave absorption of Ba(Fe_1−xCo_x)₂As₂

Yu. I. Talanov, I. I. Gimazov, D. E. Zhelezniakova

https://doi.org/10.26907/mrsej-24110

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Abstract

The results of studies of BaFe₂As₂ single crystals doped with cobalt by means of resistivity and microwave absorption measurement are reported. A theoretical description of the behavior of the microwave absorption amplitude is made taking into account the temperature dependence of resistivity, magnetic susceptibility and the lifetime of spin fluctuations. An assumption has been made that the deviation from the linear dependence of resistivity on temperature at T < 100 K is not related to the electron-electron scattering mechanism, but it is due to the appearance of nematic fluctuations. Estimates of the rate of scattering by spin fluctuations indicate their nematic nature at temperatures near the structural transition.

Keywords

iron-based superconductors, iron arsenides, resistivity, scattering rate magnetic susceptibility, microwave absorption

About the Authors

Yu. I. Talanov

Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation

Kazan 420029

I. I. Gimazov

Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS
Russian Federation

Kazan 420029

D. E. Zhelezniakova

Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS; Kazan Federal University
Russian Federation

Kazan 420029; Kazan 420008

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Review

For citations:

Talanov Yu.I., Gimazov I.I., Zhelezniakova D.E. Impact of spin correlations on resistivity and microwave absorption of Ba(Fe_1−xCo_x)₂As₂. Magnetic Resonance in Solids. 2024;26(1):24110 (8 pp.). https://doi.org/10.26907/mrsej-24110

This work is licensed under a Creative Commons Attribution 4.0 License.

ISSN 2072-5981 (Online)

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Magnetic Resonance in Solids

Impact of spin correlations on resistivity and microwave absorption of Ba(Fe1−xCox)2As2