Pressure-Driven Cooperative Spin-Crossover, Large-Volume Collapse, and   Semiconductor-to-Metal Transition in Manganese(II) Honeycomb Lattices

doi:10.1021/jacs.6b10225

CORC > 北京大学 > 化学与分子工程学院

	Pressure-Driven Cooperative Spin-Crossover, Large-Volume Collapse, and Semiconductor-to-Metal Transition in Manganese(II) Honeycomb Lattices
	Wang, Yonggang ; Zhou, Zhengyang ; Wen, Ting ; Zhou, Yannan ; Li, Nana ; Han, Fei ; Xiao, Yuming ; Chow, Paul ; Sung, Junliang ; Pravica, Michael ; Cornelius, Andrew L. ; Yang, Wenge ; Zhao, Yusheng
刊名	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
	2016
关键词	RAY-EMISSION SPECTROSCOPY ROOM-TEMPERATURE LOWER MANTLE IRON DIFFRACTION CHALCOGENIDES BISTABILITY PEROVSKITE SOLIDS MNPS3
DOI	10.1021/jacs.6b10225
英文摘要	Spin-crossover (SCO) is generally regarded as a spectacular molecular magnetism in 3d(4)-3d(7) metal complexes and holds great promise for various applications such as memory, displays, and sensors. In particular, SCO materials can be multifunctional when a classical light- or temperature induced SCO occurs along with other cooperative structural and/or electrical transport alterations. However, such a cooperative SCO has rarely been observed in condensed matter under hydrostatic pressure (an alternative external stimulus to light or temperature), probably due to the lack of synergy between metal neighbors under compression. Here, we report the observation of a pressure-driven, cooperative SCO in the two-dimensional (2D) honeycomb antiferromagnets MnPS3 and MnPSe3 at room temperature. Applying pressure to this confined 2D system leads to a dramatic magnetic moment collapse of Mn2+ (d(5)) from S = 5/2 to S = 1/2. Significantly, a number of collective phenomena were observed along with the SCO, including a large lattice collapse (similar to 20% in volume), the formation of metallic bonding, and a semiconductor-to-metal transition. Experimental evidence shows that all of these events occur in the honeycomb lattice, indicating a strongly cooperative mechanism that facilitates the occurrence of the abrupt pressure-driven SCO. We believe that the observation of this cooperative pressure-driven SCO in a 2D system can provide a rare model for theoretical investigations and lead to the discovery of more pressure-responsive multifunctional materials.; National Natural Science Foundation of China [21301063]; DOE-NNSA [DE-NA0001974]; DOE-BES [DE-FG02-99ER45775, DE-AC02-06CH11357]; NSF; [DE-NA0001982]; SCI(E); ARTICLE; yyggwang@gmail.com; yangwg@hpstar.ac.cn; zhaoys@sustc.edu.cn; 48; 15751-15757; 138
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/458095]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang, Yonggang,Zhou, Zhengyang,Wen, Ting,et al. Pressure-Driven Cooperative Spin-Crossover, Large-Volume Collapse, and Semiconductor-to-Metal Transition in Manganese(II) Honeycomb Lattices[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2016.
APA	Wang, Yonggang.,Zhou, Zhengyang.,Wen, Ting.,Zhou, Yannan.,Li, Nana.,...&Zhao, Yusheng.(2016).Pressure-Driven Cooperative Spin-Crossover, Large-Volume Collapse, and Semiconductor-to-Metal Transition in Manganese(II) Honeycomb Lattices.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY.
MLA	Wang, Yonggang,et al."Pressure-Driven Cooperative Spin-Crossover, Large-Volume Collapse, and Semiconductor-to-Metal Transition in Manganese(II) Honeycomb Lattices".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2016).