Insulator-metal-superconductor transition in the medium-entropy van der Waals compound MPSe3 (M = Fe, Mn, Cd, and In) under high pressure
文献类型：期刊论文
| 作者 | Chen, X ; Wang, JJ; Ying, TP; Huang, DJ; Gou, HY; Zhang, QH; Li, YC; Hosono, H; Guo, JG; Chen, XL
|
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2022 |
| 卷号 | 106期号:18页码:184502 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.106.184502 |
| 文献子类 | Article |
| 英文摘要 | MPX3 (M=metals; X=SorSe) represents a large family of van der Waals (vdW) materials featuring P-P dimers of similar to 2.3 angstrom separation. A dramatic alteration of its electrical transport properties, such as metal-insulator transition, has not been realized by intentional chemical doping and ionic intercalation. Here, we employ an entropy-enhancement strategy to successfully obtain a series of medium-entropy MPSe3 (M=Fe, Mn, Cd, and In), in which the electrical and magnetic properties change simultaneously. Lone-pair electrons of P emerge due to the dissociation of the dimers as evidenced by a 35% elongation in the P-P interatomic distance. The band gap widens from 0.1 to 0.7 eV by this dissociation. Under external physical pressure up to similar to 50 GPa, a giant collapse of up to 15% in the c axis happens, which is in contrast to the in-plane shrinkage of their counterparts Fe/MnPSe3. It leads to the recombination of P3- with lone-pair electrons into a P-P dimer and the smallest bulk modulus of 28 GPa in MPX3. The medium-entropy MPSe3 transitions from a spin-glass insulator to metal, and to superconductor, which is rarely observed in MPX3. Our findings highlight the P-P dimer as an indicator to probe diverse electronic structure and the effectiveness of entropy enhancement in materials science. |
| 电子版国际标准刊号 | 2469-9969 |
| 语种 | 英语 |
| WOS记录号 | WOS:000885012600003 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/300125]  |
| 专题 | 高能物理研究所_实验物理中心 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Chen, X,Wang, JJ,Ying, TP,et al. Insulator-metal-superconductor transition in the medium-entropy van der Waals compound MPSe3 (M = Fe, Mn, Cd, and In) under high pressure[J]. PHYSICAL REVIEW B,2022,106(18):184502. |
| APA | Chen, X.,Wang, JJ.,Ying, TP.,Huang, DJ.,Gou, HY.,...&Chen, XL.(2022).Insulator-metal-superconductor transition in the medium-entropy van der Waals compound MPSe3 (M = Fe, Mn, Cd, and In) under high pressure.PHYSICAL REVIEW B,106(18),184502. |
| MLA | Chen, X,et al."Insulator-metal-superconductor transition in the medium-entropy van der Waals compound MPSe3 (M = Fe, Mn, Cd, and In) under high pressure".PHYSICAL REVIEW B 106.18(2022):184502. |
入库方式： OAI收割
来源：高能物理研究所
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