特集「ナノスケール相転移現象の物理と化学」
Bi(111)薄膜の表面緩和による“トポロジカル・ブロッキング”
2026 年 69 巻 3 号 p. 159-164
詳細
2026 年 69 巻 3 号 p. 159-164
In this work, we theoretically identify a phenomenon in which a slight rearrangement of atoms at a material's surface can veil its intrinsic topological character. Like donning a “quantum mask”, the surface presents a face different from the interior. This offers a clue toward resolving the long-standing debate, spanning nearly two decades, over the topology of bismuth. Our findings show that the long-held bulk-edge correspondence principle does not necessarily hold, opening a new path forward in understanding topological materials.
