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Title: CsMn 4As 3: A Layered Tetragonal Transition-Metal Pnictide Compound with an Antiferromagnetic Ground State

Abstract

We report the synthesis and properties of a new layered tetragonal ternary compound CsMn4As3 (structure: KCu 4S 3-type, space group: P4/mmm, No. 123 and Z = 2). The material is a small band-gap semiconductor and exhibits an antiferromagnetic ground state associated with Mn spins. The compound exhibits a signature of a distinct magnetic moment canting event at 150(5) K with a canting angle of ≈ 0:3°. Although, some features of the magnetic characteristics of this new compound are qualitatively similar to those of the related BaMn 2As 2, the underlying Mn sublattices of the two materials are quite different. While the Mn square-lattice layers in BaMn 2As 2 are equally spaced along the c-direction with the interlayer distance d L Ba = 6.7341(4) Å, the Mn sublattice forms bilayers in CsMn 4As 3 with the interlayer distance within a bilayer d L Cs = 3.1661(6) Å and the distance between the two adjacent bilayers d B = 7:290(6) Å. This difference in the Mn sublattice is bound to significantly alter the energy balance between the J 1, J 2 and J c exchange interactions within the J 1-J 2-J c model compared to that in BaMn 2As 2 and themore » other related 122 compounds including the well-known iron-arsenide superconductor parent compound BaFe 2As 2. Owing to the novelty of its transition metal sublattice, this new addition to the family of tetragonal materials related to the iron-based superconductors brings prospects for doping and pressure studies in the search of new superconducting phases as well as other exciting correlated-electron properties.« less

Authors:
ORCiD logo [1];  [1];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1556933
Report Number(s):
IS-J-9619
Journal ID: ISSN 0020-1669
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Inorganic Chemistry
Additional Journal Information:
Journal Volume: 57; Journal Issue: 6; Journal ID: ISSN 0020-1669
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Pandey, Abhishek, Samal, Saroj L., and Johnston, David C. CsMn4As3: A Layered Tetragonal Transition-Metal Pnictide Compound with an Antiferromagnetic Ground State. United States: N. p., 2018. Web. doi:10.1021/acs.inorgchem.7b03105.
Pandey, Abhishek, Samal, Saroj L., & Johnston, David C. CsMn4As3: A Layered Tetragonal Transition-Metal Pnictide Compound with an Antiferromagnetic Ground State. United States. doi:10.1021/acs.inorgchem.7b03105.
Pandey, Abhishek, Samal, Saroj L., and Johnston, David C. Tue . "CsMn4As3: A Layered Tetragonal Transition-Metal Pnictide Compound with an Antiferromagnetic Ground State". United States. doi:10.1021/acs.inorgchem.7b03105. https://www.osti.gov/servlets/purl/1556933.
@article{osti_1556933,
title = {CsMn4As3: A Layered Tetragonal Transition-Metal Pnictide Compound with an Antiferromagnetic Ground State},
author = {Pandey, Abhishek and Samal, Saroj L. and Johnston, David C.},
abstractNote = {We report the synthesis and properties of a new layered tetragonal ternary compound CsMn4As3 (structure: KCu4S3-type, space group: P4/mmm, No. 123 and Z = 2). The material is a small band-gap semiconductor and exhibits an antiferromagnetic ground state associated with Mn spins. The compound exhibits a signature of a distinct magnetic moment canting event at 150(5) K with a canting angle of ≈ 0:3°. Although, some features of the magnetic characteristics of this new compound are qualitatively similar to those of the related BaMn2As2, the underlying Mn sublattices of the two materials are quite different. While the Mn square-lattice layers in BaMn2As2 are equally spaced along the c-direction with the interlayer distance dL Ba = 6.7341(4) Å, the Mn sublattice forms bilayers in CsMn4As3 with the interlayer distance within a bilayer dL Cs = 3.1661(6) Å and the distance between the two adjacent bilayers dB = 7:290(6) Å. This difference in the Mn sublattice is bound to significantly alter the energy balance between the J1, J2 and Jc exchange interactions within the J1-J2-Jc model compared to that in BaMn2As2 and the other related 122 compounds including the well-known iron-arsenide superconductor parent compound BaFe2As2. Owing to the novelty of its transition metal sublattice, this new addition to the family of tetragonal materials related to the iron-based superconductors brings prospects for doping and pressure studies in the search of new superconducting phases as well as other exciting correlated-electron properties.},
doi = {10.1021/acs.inorgchem.7b03105},
journal = {Inorganic Chemistry},
number = 6,
volume = 57,
place = {United States},
year = {2018},
month = {3}
}

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