放射光顕微ARPESによるTeのエッジ状態観測

中山 耕輔; 徳山 敦也; 佐藤 宇史

doi:10.1380/vss.68.277

Special Feature : Frontiers of Microscopic Photoelectron Spectroscopy -Landscape of Real Space and Momentum Space-

Observation of Edge States in Te Using Synchrotron-based Micro-ARPES

Kosuke NAKAYAMA , Atsuya TOKUYAMA, Takafumi SATO

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Keywords: topological insulators, edge states, angle-resolved photoemission spectroscopy, gas cluster ion beam

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2025 Volume 68 Issue 5 Pages 277-282

DOI https://doi.org/10.1380/vss.68.277

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Abstract

We review our recent study on the electronic states of Te(0001) using high-spatial-resolution angle-resolved photoemission spectroscopy (ARPES) with micro-focused synchrotron light. The results demonstrate the formation of in-gap states confined to the edges, and support topologically nontrivial character of Te helix chain.

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