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题名: Semimetal with both Rarita-Schwinger-Weyl and Weyl excitations
作者: Liang, L ;  Yu, Y
刊名: PHYSICAL REVIEW B
出版日期: 2016
卷号: 93, 期号:4, 页码:45113
学科分类: Physics
DOI: http://dx.doi.org/10.1103/PhysRevB.93.045113
通讯作者: Liang, L (reprint author), Fudan Univ, Ctr Adv Microstruct, State Key Lab Surface Phys & Collaborat Innovat, Dept Phys,Ctr Field Theory & Particle Phys, Shanghai 200433, Peoples R China.
文章类型: Article
英文摘要: A relativistic spinor with spin 3/2 is historically called a Rarita-Schwinger spinor. The right-and left-handed chiral degrees of freedom for the massless Rarita-Schwinger spinor are independent and are thought of as the left and right Weyl fermions with helicity +/- 3/2. We study three orbital spin-1/2 Weyl semimetals in the strong spin-orbital coupling limit with time reversal symmetry breaking. We find that in this limit the systems can be a J(eff) = 1/2 Weyl semimetal or a J(eff) = 3/2 semimetal, depending on the Fermi level position. The latter near Weyl points includes degrees of freedom of both Rarita-Schwinger-Weyl and Weyl. A nonlocal potential separates the Weyl and Rarita-Schwinger-Weyl degrees of freedom, and a relativistic Rarita-Schwinger-Weyl semimetal emerges. This recipe can be generalized to a mulit-Weyl semimetal and Weyl fermions with pairing interaction to obtain high monopole charges. Similarly, a spatial-inversion-breaking Raita-Schwinger-Weyl semimetal may also emerge.
类目[WOS]: Physics, Condensed Matter
关键词[WOS]: TOPOLOGICAL DIRAC SEMIMETAL ;  SPIN ;  QUANTIZATION ;  INSULATORS ;  PARTICLES ;  MOBILITY ;  PHASE
收录类别: SCI
项目资助者: 973 Program of MOST of China [2012CB821402] ;  NNSF of China [11174298, 11474061] ;  Academy of Finland through its Centres of Excellence Programme [284621]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21805
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Liang, L,Yu, Y. Semimetal with both Rarita-Schwinger-Weyl and Weyl excitations[J]. PHYSICAL REVIEW B,2016,93(4):45113.
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