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Pandey A, Dhaka RS, Lamsal J, et al. Ba(1-x)K(x)Mn2As2: an antiferromagnetic local-moment metal. Phys Rev Lett. 2012;108(8):087005doi: 10.1103/PhysRevLett.108.087005.
Pandey, A., Dhaka, R. S., Lamsal, J., Lee, Y., Anand, V. K., Kreyssig, A., Heitmann, T. W., McQueeney, R. J., Goldman, A. I., Harmon, B. N., Kaminski, A., & Johnston, D. C. (2012). Ba(1-x)K(x)Mn2As2: an antiferromagnetic local-moment metal. Physical review letters, 108(8), 087005. https://doi.org/10.1103/PhysRevLett.108.087005
Pandey, Abhishek, et al. "Ba(1-x)K(x)Mn2As2: an antiferromagnetic local-moment metal." Physical review letters vol. 108,8 (2012): 087005. doi: https://doi.org/10.1103/PhysRevLett.108.087005
Pandey A, Dhaka RS, Lamsal J, Lee Y, Anand VK, Kreyssig A, Heitmann TW, McQueeney RJ, Goldman AI, Harmon BN, Kaminski A, Johnston DC. Ba(1-x)K(x)Mn2As2: an antiferromagnetic local-moment metal. Phys Rev Lett. 2012 Feb 24;108(8):087005. doi: 10.1103/PhysRevLett.108.087005. Epub 2012 Feb 23. PMID: 22463561.
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Phys Rev Lett. 2012 Feb 24;108(8):087005. doi: 10.1103/PhysRevLett.108.087005. Epub 2012 Feb 23.

Ba(1-x)K(x)Mn2As2: an antiferromagnetic local-moment metal.

Physical review letters

Abhishek Pandey, R S Dhaka, J Lamsal, Y Lee, V K Anand, A Kreyssig, T W Heitmann, R J McQueeney, A I Goldman, B N Harmon, A Kaminski, D C Johnston

Affiliations

  1. Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA. [email protected]

PMID: 22463561 DOI: 10.1103/PhysRevLett.108.087005

Abstract

The compound BaMn2As2 with the tetragonal ThCr2Si2 structure is a local-moment antiferromagnetic insulator with a Néel temperature T(N)=625 K and a large ordered moment μ=3.9μ(B)/Mn. We demonstrate that this compound can be driven metallic by partial substitution of Ba by K while retaining the same crystal and antiferromagnetic structures together with nearly the same high T(N) and large μ. Ba(1-x)K(x)Mn2As2 is thus the first metallic ThCr2Si2-type MAs-based system containing local 3d transition metal M magnetic moments, with consequences for the ongoing debate about the local-moment versus itinerant pictures of the FeAs-based superconductors and parent compounds. The Ba(1-x)K(x)Mn2As2 class of compounds also forms a bridge between the layered iron pnictides and cuprates and may be useful to test theories of high T(c) superconductivity.

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