报告题目：Two-dimensional materials and hetero-structures for new topological phases and tailored electronic structures

报告时间：2016年9月23日（周五）下午2:30

报告地点：新物理楼五楼多功能厅

报告简介：Two-dimensional materialsand hetero-structures provide an important playground for realizing novel topological quantum phases as well as tailored electronic and spin textures with potential applications. In this talk, I will first present ourrecent works on the experimental realization of novel topological phases in the family of transition metal dichalcogenides [1-3]. I will also present our recent work on the interesting band structure engineering by superlattice potential in a model van der Waals heterostructure graphene/h-BN[4].

References:

1. Ke Deng et al., “Experimental observation of topological Fermi arcs in type-II Weyl semimetal MoTe₂”, Nature Physics, in press,DOI:10.1038/nphys3856.

2. Kenan Zhanget al, “Raman signatures of inversion symmetry breaking and structural phase transition in type-II Weyl semimetal MoTe₂”, arXiv:1603.08508.

3. Mingzhe Yanet al., “Lorentz-violating type-II Dirac fermions in transition metal dichalcogenide PtTe₂”, arXiv:1607.03643.

4. Eryin Wanget al.,“Gaps induced by inversion symmetry breaking and second-generation Dirac cones in graphene/h-BN”, Nature Physics, in press, DOI:10.1038/nphys3871.