Experimental realization of two-dimensional Dirac nodal line fermions in monolayer Cu2Si

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2017专题

	Experimental realization of two-dimensional Dirac nodal line fermions in monolayer Cu2Si
	Feng, Baojie; Fu, Botao; Kasamatsu, Shusuke; Ito, Suguru; Cheng, Peng; Liu, Cheng-Cheng; Feng, Ya; Wu, Shilong; Mahatha, Sanjoy K.; Sheverdyaeva, Polina
刊名	NATURE COMMUNICATIONS
	2017
卷号	8 页码:1007
ISSN号	2041-1723
英文摘要	Topological nodal line semimetals, a novel quantum state of materials, possess topologically nontrivial valence and conduction bands that touch at a line near the Fermi level. The exotic band structure can lead to various novel properties, such as long-range Coulomb interaction and flat Landau levels. Recently, topological nodal lines have been observed in several bulk materials, such as PtSn4, ZrSiS, TlTaSe2 and PbTaSe2. However, in two-dimensional materials, experimental research on nodal line fermions is still lacking. Here, we report the discovery of two-dimensional Dirac nodal line fermions in monolayer Cu2Si based on combined theoretical calculations and angle-resolved photoemission spectroscopy measurements. The Dirac nodal lines in Cu2Si form two concentric loops centred around the Gamma point and are protected by mirror reflection symmetry. Our results establish Cu2Si as a platform to study the novel physical properties in two-dimensional Dirac materials and provide opportunities to realize high-speed low-dissipation devices.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/13571]
专题	2017专题
推荐引用方式 GB/T 7714	Feng, Baojie,Fu, Botao,Kasamatsu, Shusuke,et al. Experimental realization of two-dimensional Dirac nodal line fermions in monolayer Cu2Si[J]. NATURE COMMUNICATIONS,2017,8:1007.
APA	Feng, Baojie.,Fu, Botao.,Kasamatsu, Shusuke.,Ito, Suguru.,Cheng, Peng.,...&Matsuda, Iwao.(2017).Experimental realization of two-dimensional Dirac nodal line fermions in monolayer Cu2Si.NATURE COMMUNICATIONS,8,1007.
MLA	Feng, Baojie,et al."Experimental realization of two-dimensional Dirac nodal line fermions in monolayer Cu2Si".NATURE COMMUNICATIONS 8(2017):1007.