Emergent superconductivity in an iron-based honeycomb lattice initiated by pressure-driven spin-crossover

Wang, Yonggang1,2; Ying, Jianjun3,4; Zhou, Zhengyang5,6; Sun, Junliang5; Wen, Ting1; Zhou, Yannan7; Li, Nana1; Zhang, Qian1; Han, Fei1,2; Xiao, Yuming4; Chow, Paul4; Yang, Wenge1,2; Struzhkin, Viktor V.3; Zhao, Yusheng8; Mao, Ho-Kwang1,3

2018-05-15

10.1038/s41467-018-04326-1

Nature Communications   影响因子和分区

2041-1723

The discovery of iron-based superconductors (FeSCs), with the highest transition temperature (T-c) up to 55 K, has attracted worldwide research efforts over the past ten years. So far, all these FeSCs structurally adopt FeSe-type layers with a square iron lattice and superconductivity can be generated by either chemical doping or external pressure. Herein, we report the observation of superconductivity in an iron-based honeycomb lattice via pressure-driven spin-crossover. Under compression, the layered FePX3 (X = S, Se) simultaneously undergo large in-plane lattice collapses, abrupt spin-crossovers, and insulator-metal transitions. Superconductivity emerges in FePSe3 along with the structural transition and vanishing of magnetic moment with a starting T-c similar to 2.5 K at 9.0 GPa and the maximum T-c similar to 5.5 K around 30 GPa. The discovery of superconductivity in iron-based honeycomb lattice provides a demonstration for the pursuit of transition-metal-based superconductors via pressure-driven spin-crossover.

SCI

英语

NI论文

通讯

National Natural Science Foundation of China[51527801] ; National Natural Science Foundation of China[U1530402]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:000432115300018

NATURE PUBLISHING GROUP

Web of Science

1.Ctr High Pressure Sci & Technol Adv Res HPSTAR, Beijing 100094, Peoples R China
2.Carnegie Inst Sci, Geophys Lab, HPSynC, Argonne, IL 60439 USA
3.Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA
4.Carnegie Inst Sci, Geophys Lab, HPCAT, Argonne, IL 60439 USA
5.Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
6.Chongqing Univ, Coll Chem & Chem Engn, Chongqing 400044, Peoples R China
7.Huanghe Sci & Technol Coll, Inst Nanostruct Funct Mat, Zhengzhou 450006, Henan, Peoples R China
8.Southern Univ Sci & Technol, Shenzhen 518055, Peoples R China

Wang, Yonggang,Ying, Jianjun,Zhou, Zhengyang,et al. Emergent superconductivity in an iron-based honeycomb lattice initiated by pressure-driven spin-crossover[J]. Nature Communications,2018,9.

Wang, Yonggang.,Ying, Jianjun.,Zhou, Zhengyang.,Sun, Junliang.,Wen, Ting.,...&Mao, Ho-Kwang.(2018).Emergent superconductivity in an iron-based honeycomb lattice initiated by pressure-driven spin-crossover.Nature Communications,9.

Wang, Yonggang,et al."Emergent superconductivity in an iron-based honeycomb lattice initiated by pressure-driven spin-crossover".Nature Communications 9(2018).