Archimedean solidlike superconducting framework in phase-separated K0.8 F e1.6+x S e2 (0≤x≤0.15)

Z. Wang; Y. Cai; Z. W. Wang; C. Ma; Z. Chen; H. X. Yang; H. F. Tian; J. Q. Li

doi:10.1103/PhysRevB.91.064513

Archimedean solidlike superconducting framework in phase-separated K0.8 F e1.6+x S e2 (0≤x≤0.15)

Z. Wang, Y. Cai, Z. W. Wang, C. Ma, Z. Chen, H. X. Yang, H. F. Tian, J. Q. Li^*

^*此作品的通讯作者

科研成果: 期刊稿件 › 文章 › 同行评审

20 引用（Scopus）

摘要

The superconducting (SC) phase in phase-separated (PS) K0.8Fe1.6+xSe2(0≤x≤0.15) materials is found to crystallize on Archimedean solidlike frameworks, and this structural feature originates from a spinodal phase separation (SPS) at around Ts≈540K, depending slightly on the Fe concentration, as revealed by in situ heating TEM observations and shown in a phase diagram. Two stable phases in K0.8Fe1.6+xSe2 are demonstrated to be the SC K0.5Fe2Se2 and antiferromagnetic (AFM) K0.8Fe1.6Se2. The spinodal waves go along the systematic [113] direction and result in notable lamellar structure as illustrated by strain-field theoretical simulations. The three-dimensional SC framework is constructed with hollow truncated octahedron similar to that discussed for Archimedean solids. Based on this structural model, we can efficiently calculate the volume fraction of the SC phase in this type of PS SC material.

源语言	英语
文章编号	064513
期刊	Physical Review B - Condensed Matter and Materials Physics
卷	91
期	6
DOI	https://doi.org/10.1103/PhysRevB.91.064513
出版状态	已出版 - 27 2月 2015
已对外发布	是

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title = "Archimedean solidlike superconducting framework in phase-separated K0.8 F e1.6+x S e2 (0≤x≤0.15)",

abstract = "The superconducting (SC) phase in phase-separated (PS) K0.8Fe1.6+xSe2(0≤x≤0.15) materials is found to crystallize on Archimedean solidlike frameworks, and this structural feature originates from a spinodal phase separation (SPS) at around Ts≈540K, depending slightly on the Fe concentration, as revealed by in situ heating TEM observations and shown in a phase diagram. Two stable phases in K0.8Fe1.6+xSe2 are demonstrated to be the SC K0.5Fe2Se2 and antiferromagnetic (AFM) K0.8Fe1.6Se2. The spinodal waves go along the systematic [113] direction and result in notable lamellar structure as illustrated by strain-field theoretical simulations. The three-dimensional SC framework is constructed with hollow truncated octahedron similar to that discussed for Archimedean solids. Based on this structural model, we can efficiently calculate the volume fraction of the SC phase in this type of PS SC material.",

author = "Z. Wang and Y. Cai and Wang, {Z. W.} and C. Ma and Z. Chen and Yang, {H. X.} and Tian, {H. F.} and Li, {J. Q.}",

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AU - Wang, Z.

AU - Cai, Y.

AU - Wang, Z. W.

AU - Ma, C.

AU - Chen, Z.

AU - Yang, H. X.

AU - Tian, H. F.

AU - Li, J. Q.

PY - 2015/2/27

Y1 - 2015/2/27

N2 - The superconducting (SC) phase in phase-separated (PS) K0.8Fe1.6+xSe2(0≤x≤0.15) materials is found to crystallize on Archimedean solidlike frameworks, and this structural feature originates from a spinodal phase separation (SPS) at around Ts≈540K, depending slightly on the Fe concentration, as revealed by in situ heating TEM observations and shown in a phase diagram. Two stable phases in K0.8Fe1.6+xSe2 are demonstrated to be the SC K0.5Fe2Se2 and antiferromagnetic (AFM) K0.8Fe1.6Se2. The spinodal waves go along the systematic [113] direction and result in notable lamellar structure as illustrated by strain-field theoretical simulations. The three-dimensional SC framework is constructed with hollow truncated octahedron similar to that discussed for Archimedean solids. Based on this structural model, we can efficiently calculate the volume fraction of the SC phase in this type of PS SC material.

AB - The superconducting (SC) phase in phase-separated (PS) K0.8Fe1.6+xSe2(0≤x≤0.15) materials is found to crystallize on Archimedean solidlike frameworks, and this structural feature originates from a spinodal phase separation (SPS) at around Ts≈540K, depending slightly on the Fe concentration, as revealed by in situ heating TEM observations and shown in a phase diagram. Two stable phases in K0.8Fe1.6+xSe2 are demonstrated to be the SC K0.5Fe2Se2 and antiferromagnetic (AFM) K0.8Fe1.6Se2. The spinodal waves go along the systematic [113] direction and result in notable lamellar structure as illustrated by strain-field theoretical simulations. The three-dimensional SC framework is constructed with hollow truncated octahedron similar to that discussed for Archimedean solids. Based on this structural model, we can efficiently calculate the volume fraction of the SC phase in this type of PS SC material.

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JO - Physical Review B - Condensed Matter and Materials Physics

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Archimedean solidlike superconducting framework in phase-separated K0.8 F e1.6+x S e2 (0≤x≤0.15)

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