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凝態理論seminar

Zero-Energy Landau Level in Dirac Semi-metal Phases

演講者 : Yueh-Ting, Yao 大專生 (成功大學物理系)
演講時間 : 2022 / 05 / 18 16:20
理學教學新大樓物理系 5F 36567會議室
Zero-energy Landau Level is the strong evidence of Dirac point especially in 2-D materials for experimentation. But we found that not every Dirac semi-metal system emerge the zero-energy Landau Level. In this research, we introduce the symmetry analysis of 2D Bernevig-Hughes-Zhang (BHZ) model in different Dirac semi-metal phases. Finally, we will show that the zero-energy Landau Level is protected by chiral symmetry.