The 83rd JSAP Autumn Meeting 2022

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16 Amorphous and Microcrystalline Materials » 16.1 Fundamental properties, evaluation, process and devices in disordered materials

[22p-A301-1~15] 16.1 Fundamental properties, evaluation, process and devices in disordered materials

Thu. Sep 22, 2022 1:30 PM - 5:45 PM A301 (A301)

Toshihiro Nakaoka(Sophia Univ.), Yuji Sutou(Tohoku Univ.), Kotaro Makino(AIST)

5:15 PM - 5:30 PM

[22p-A301-14] Theoretical analysis of surface states of Bi2Se3 surfaces for quantitative evaluation of photoelectron emission

〇Koichi Kusakabe1, Rikuto Yamamoto1, Keiki Fukumoto2, Kunio Ishida3 (1.Univ. of Hyogo, 2.KEK, 3.Utsunomiya Univ.)

Keywords:Bi2Se3, Surface states, Topological insulator

Considering several Bi2Se3 surfaces, the surface depth dependence of the Dirac electrons was obtained by applying density functional theory calculations to obtain data for direct comparison with PEEM data. Compared to clean QL surfaces, the p-DOS of Dirac electrons may be enhanced when Bi surfaces are obtained. The consistency with PEEM data is discussed.