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Yu J, Wang M, Frandsen BA, Sun H, Yin J, Liu Z, Wu S, Yi M, Xu Z, Acharya A, Huang Q, Bourret-Courchesne E, Lynn JW, Birgeneau RJ. Structural, magnetic, and electronic evolution of the spin-ladder system BaFe 2S 3-x Se x with isoelectronic substitution. PHYSICAL REVIEW. B 2020; 101:10.1103/PhysRevB.101.235134. [PMID: 34136736 PMCID: PMC8204408 DOI: 10.1103/physrevb.101.235134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We report experimental studies of a series of BaFe2S3-x Se x (0 ⩽ x ⩽ 3) single crystals and powder specimens using x-ray diffraction, neutron-diffraction, muon-spin-relaxation, and electrical transport measurements. A structural transformation from Cmcm (BaFe2S3) to Pnma (BaFe2Se3) was identified around x = 0.7 - 1. Neutron-diffraction measurements on the samples with x = 0.2, 0.4, and 0.7 reveal that the Néel temperature of the stripe antiferromagnetic order is gradually suppressed from ~120 to 85 K, while the magnitude of the ordered Fe2+ moments shows very little variation. Similarly, the block antiferromagnetic order in BaFe2Se3 remains robust for 1.5 ⩽ x ⩽ 3 with negligible variation in the ordered moment and a slight decrease of the Néel temperature from 250 K (x = 3) to 225 K (x = 1.5). The sample with x = 1 near the Cmcm and Pnma border shows coexisting, two-dimensional, short-range stripe- and block-type antiferromagnetic correlations. The system remains insulating for all x, but the thermal activation gap shows an abrupt increase when traversing the boundary from the Cmcm stripe phase to the Pnma block phase. The results demonstrate that the crystal structure, magnetic order, and electronic properties are strongly coupled in the BaFe2S3-x Se x system.
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Affiliation(s)
- Jia Yu
- School of Physics, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Meng Wang
- School of Physics, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Benjamin A. Frandsen
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA
| | - Hualei Sun
- School of Physics, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Junjie Yin
- School of Physics, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Zengjia Liu
- School of Physics, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Shan Wu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Ming Yi
- Department of Physics, University of California, Berkeley, California 94720, USA
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA
| | - Zhijun Xu
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA
| | - Arani Acharya
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Qingzhen Huang
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Edith Bourret-Courchesne
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Jeffrey W. Lynn
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Robert J. Birgeneau
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
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