mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal University10.26907/mrsej-24110mrisel-249Research ArticleСтатьиImpact of spin correlations on resistivity and microwave absorption of Ba(Fe1−xCox)2As2TalanovYu. I.

Kazan 420029

talanov@kfti.knc.ruGimazovI. I.

Kazan 420029

ZhelezniakovaD. E.

Kazan 420029; Kazan 420008

Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RASRussian FederationZavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS; Kazan Federal UniversityRussian Federation202419042024261SPECIAL ISSUE dedicated to Boris I. Kochelaev's 90th birthday24110 (8 pp.)Copyright © Talanov Y.I., Gimazov I.I., Zhelezniakova D.E., 20242024Talanov Y.I., Gimazov I.I., Zhelezniakova D.E.Talanov Y.I., Gimazov I.I., Zhelezniakova D.E.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/249

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.

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The authors declare that there are no conflicts of interest present.