Structural and Antiferromagnetic Properties of Ba(Fe1−x−yCoxRhy)2As2 compounds

Authors

M. G. Kim
T. W. Heitmann
Sean R. Mulcahy, Western Washington UniversityFollow
E. D. Bourret-Courchesne
R. J. Birgeneau

Document Type

Article

Publication Date

2016

Keywords

High-temperature superconductivity

Abstract

We present a systematic investigation of the electrical, structural, and antiferromagnetic properties for the series of Ba(Fe_{1 −x−y}Co_xRh_y)₂As₂ compounds with fixed x ≈ 0.027 and 0 ≤ y ≤ 0.035. We compare our results for the Co-Rh doped Ba(Fe_1−x−yCo_xRh_y)₂As₂ compounds with the Co doped Ba(Fe_1−xCo_x)₂As₂ compounds. We demonstrate that the electrical, structural, antiferromagnetic, and superconducting properties of the Co-Rh doped compounds are similar to the properties of the Co doped compounds. We find that the overall behaviors of Ba(Fe_1−x−yCo_xRh_y)₂As₂ and Ba(Fe_1−xCo_x)₂As₂ compounds are very similar when the total number of extra electrons per Fe/TM (TM=transition metal) site is considered, which is consistent with the rigid band model. Despite the similarity, we find that the details of the transitions, for example, the temperature difference between the structural and antiferromagnetic transition temperatures and the incommensurability of the antiferromangetic peaks, are different between Ba(Fe_1−x−yCo_xRh_y)₂As₂ and Ba(Fe_1−xCo_x)₂As₂ compounds.

Publication Title

Physical Review B

Volume

93

Issue

9

First Page

#094520

Required Publisher's Statement

©2016 American Physical Society

DOI: 10.1103/PhysRevB.93.094520

Link to publisher's version of the article: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.094520

Recommended Citation

M. G. Kim, T. W. Heitmann, S. R. Mulcahy, E. D. Bourret-Courchesne, and R. J. Birgeneau Physical Review B 93, 094520 – Published 24 March 2016

Subjects - Topical (LCSH)

Antiferromagnetism; Superconductivity; Neutrons--Diffraction

Genre/Form

reports

Type

Text

Language

English

Format

application/pdf