Real-space and reciprocal-space topology in the Eu(Ga1-xAlx)4 square net system

doi:10.1103/PhysRevB.108.064436

IMR OpenIR

	Real-space and reciprocal-space topology in the Eu(Ga_1-xAl_x)₄ square net system
	Moya, Jaime M.1,2,3; Huang, Jianwei 2,3; Lei, Shiming 2,3; Allen, Kevin 2,3; Gao, Yuxiang 2,3; Sun, Yan 4; Yi, Ming 2,3; Morosan, E.2,3
通讯作者	Morosan, E.(em11@rice.edu)
	2023-08-31
发表期刊	PHYSICAL REVIEW B
ISSN	2469-9950
卷号	108 期号:6 页码:10
摘要	Magnetotransport measurements of the centrosymmetric square net Eu(Ga1-xAlx)4 compounds reveal evidence of both reciprocal- and real-space topology. For compositions 0.50 x 0.90, several intermediate field phases are found by magnetization measurements when H II c, where a maximum in the topological Hall effect is observed, pointing to the existence of topological (real-space topology) or noncoplanar spin textures. For 0.25 x 0.39, magnetization measurements reveal an intermediate field state, but no transition is visible in the Hall measurements. For x = 0.15, only one magnetic transition occurs below the Neel temperature TN, and no intermediate field spin reorientations are observed. The Hall effect varies smoothly before the spin-polarized (SP) state. However, in the SP state, Hall measurements reveal a large anomalous Hall effect (AHE) for all compositions, a consequence of reciprocal-space topology. Density functional theory calculations in the paramagnetic state indeed reveal a Dirac point that lies very near the Fermi energy, which is expected to split into Weyl nodes in the SP state, thereby explaining the observed AHE. These results suggest the Eu(Ga1-xAlx)4 family is a rare material platform where real- and reciprocal-space topology exist in a single material platform.
资助者	AFOSR ; NSF Graduate Research Fellowship Program ; National Science Foundation (NSF) DMR ; Robert A. Welch Foundation ; Gordon and Betty Moore Foundation's EPiQS Initiative
DOI	10.1103/PhysRevB.108.064436
收录类别	SCI
语种	英语
资助项目	AFOSR[FA9550-21-1-0343] ; NSF Graduate Research Fellowship Program[DGE-1842494] ; National Science Foundation (NSF) DMR[1903741] ; Robert A. Welch Foundation[C-2175] ; Gordon and Betty Moore Foundation's EPiQS Initiative[GBMF9470]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001078582800003
出版者	AMER PHYSICAL SOC
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179486
专题	中国科学院金属研究所
通讯作者	Morosan, E.
作者单位	1.Rice Univ, Appl Phys Grad Program, Houston, TX 77005 USA 2.Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA 3.Rice Univ, Rice Ctr Quantum Mat RCQM, Houston, TX 77005 USA 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Moya, Jaime M.,Huang, Jianwei,Lei, Shiming,et al. Real-space and reciprocal-space topology in the Eu(Ga_1-xAl_x)₄ square net system[J]. PHYSICAL REVIEW B,2023,108(6):10.
APA	Moya, Jaime M..,Huang, Jianwei.,Lei, Shiming.,Allen, Kevin.,Gao, Yuxiang.,...&Morosan, E..(2023).Real-space and reciprocal-space topology in the Eu(Ga_1-xAl_x)₄ square net system.PHYSICAL REVIEW B,108(6),10.
MLA	Moya, Jaime M.,et al."Real-space and reciprocal-space topology in the Eu(Ga_1-xAl_x)₄ square net system".PHYSICAL REVIEW B 108.6(2023):10.