Observation of multiple types of topological fermions in PdBiSe

doi:10.1103/PhysRevB.99.241104

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Observation of multiple types of topological fermions in PdBiSe
	Lv, BQ ; Feng, ZL ; Zhao, JZ ; Yuan, NFQ ; Zong, A ; Luo, KE ; Yu, R ; Huang, YB ; Strocov, VN ; Chikina, A
刊名	PHYSICAL REVIEW B
	2019
卷号	99 期号:24 页码:—
关键词	DIRAC SEMIMETAL DISCOVERY STATES
ISSN号	2469-9950
DOI	10.1103/PhysRevB.99.241104
文献子类	期刊论文
英文摘要	Topological semimetals with different types of band crossings provide a rich platform to realize novel fermionic excitations, known as topological fermions. In particular, some fermionic excitations can be direct analogs of elementary particles in quantum field theory when both obey the same laws of physics in the low-energy limit. Examples include Dirac and Weyl fermions, whose solid-state realizations have provided new insights into long-sought phenomena in high-energy physics. Recently, theorists predicted new types of fermionic excitations in condensed-matter systems without any high-energy counterpart, and their existence is protected by crystalline symmetries. By studying the topology of the electronic structure in PdBiSe using density functional theory calculations and bulk-sensitive soft x-ray angle-resolved photoemission spectroscopy, we demonstrate a coexistence of four different types of topological fermions: Weyl, Rarita-Schwinger-Weyl, double class-II three-component, and charge-2 fourfold fermions. Our discovery provides a remarkable platform to realize multiple fermions in a single solid, charting the way forward to studies of their potentially exotic properties as well as their interplay.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31736]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.St Petersburg State Univ, Dept Phys, St Petersburg 199034, Russia; 2.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China; 3.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China; 4.MIT, Dept Phys, Cambridge, MA 02139 USA; 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 6.Southwest Univ Sci & Technol, Coinnovat Ctr New Energet Mat, Mianyang 621010, Sichuan, Peoples R China; 7.Swiss Fed Inst Technol, Theoret Phys, CH-8093 Zurich, Switzerland; 8.Swiss Fed Inst Technol, Stn Q Zurich, CH-8093 Zurich, Switzerland; 9.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China; 10.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China;
推荐引用方式 GB/T 7714	Lv, BQ,Feng, ZL,Zhao, JZ,et al. Observation of multiple types of topological fermions in PdBiSe[J]. PHYSICAL REVIEW B,2019,99(24):—.
APA	Lv, BQ.,Feng, ZL.,Zhao, JZ.,Yuan, NFQ.,Zong, A.,...&Ding, H.(2019).Observation of multiple types of topological fermions in PdBiSe.PHYSICAL REVIEW B,99(24),—.
MLA	Lv, BQ,et al."Observation of multiple types of topological fermions in PdBiSe".PHYSICAL REVIEW B 99.24(2019):—.