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题名:
Structural evolution behavior of manganese monophosphide under high pressure: experimental and theoretical study
作者: Yu, ZH; Wu, W; Lu, PC; Zhao, JG; Cheng, JG; Hu, QY; Yuan, Y; Li, X; Pei, CY; Chen, FJ; Yan, ZP; Yan, S; Yang, K; Sun, J; Luo, JL; Wang, L
刊名: JOURNAL OF PHYSICS-CONDENSED MATTER
出版日期: 2017
卷号: 29, 期号:25, 页码:-
关键词: manganese-based superconductor ; high-pressure effects ; phase transitions
DOI: 10.1088/1361-648X/aa6554
文章类型: 期刊论文
英文摘要: The influence of external pressure on the structural properties of manganese monophosphides (MnP) at room temperature has been studied using in situ angle dispersive synchrotron x-ray powder diffraction (AD-XRD) with a diamond anvil cell. The crystal structure of MnP is stable between 0 to 15 GPa. However, the compressibility of b-axis is much larger than those of a- and c-axes. From this result we suggested that the occurrence of superconductivity in MnP was induced by suppression of the long-range antiferromagnetically ordered state rather than a structural phase transition. Furthermore, the present experimental results show that the Pnma phase of MnP undergoes a pressure-induced structural phase transition at similar to 15.0 GPa. This finding lighted up-to-date understanding of the common prototype B31 structure (Strukturbericht Designation: B31) in transition metal monophosphides. No additional structural phase transition was observed up to 35.1 GPa (Run 1) and 40.2 GPa (Run 2) from the present AD-XRD results. With an extensive crystal structure searching and ab initio calculations, we predict that MnP underwent two pressure-induced structural phase transitions of Pnma -> P2(1)3 and P2(1)3 -> Pm-3m (CsCl-type) at 55.0 and 92.0 GPa, respectively. The structural stability and the electronic structures of manganese monophosphides under high pressure are also briefly discussed.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000402433000002
ISSN号: 0953-8984
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27452
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Yu, ZH,Wu, W,Lu, PC,et al. Structural evolution behavior of manganese monophosphide under high pressure: experimental and theoretical study[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2017-01-01,29(25):-.
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