Measurement and analysis of the Hall effect of A-Fe₂As₂ single crystals with A = Ba, Ca or Sr

2009/11/06 by C. L. Zentile, J. Gillett, Zentile, C. L. +5
Materials Science · #FOS: Physical sciences #Magnetic Properties of Alloys #Strongly Correlated Electrons (cond-mat.str-el)

paper · pdf · doi:10.48550/arxiv.0911.1259

openalex publication_date 2009/11/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report measurements of the Hall coefficient R_H for single crystals of AFe₂As₂ with A = Ba, Ca or Sr which are the anti-ferromagnetic parent compounds of some high temperature pnictide superconductors. We show that R_H of Sr-122 is consistent with high field quantum oscillation data. Our R_H(T) data can also be used to estimate values of the spin density wave gap, giving Δ_SDW(0) = 710± 70 K for Sr-122 and 435± 20 K for Ba-122.

Related

• Power-law Temperature Dependent Hall Angle in the Normal State and its Correlation with Superconductivity in iron-pnictides
• Quantum oscillations in antiferromagnetic CaFe2As2 on the brink of superconductivity
• Hall effect in PrB₆ and NdB₆
• Interplay between superconductivity and antiferromagnetism in some iron-pnictide single crystals studied by ⁵⁷Fe Mössbauer spectroscopy
• Strong electron-lattice coupling and orbital fluctuations in iron pnictide superconductor Ba(Fe1-xCox)2As2