Details

Autor(en) / Beteiligte

• Gruznev, Dimitry V.
• Bondarenko, Leonid V.
• Matetskiy, Andrey V.
• Mihalyuk, Alexey N.
• Tupchaya, Alexandra Y.
• Utas, Oleg A.
• Eremeev, Sergey V.
• Hsing, Cheng-Rong
• Chou, Jyh-Pin
• Wei, Ching-Ming
• Zotov, Andrey V.
• Saranin, Alexander A.

Titel

Synthesis of two-dimensional TlxBi1−x compounds and Archimedean encoding of their atomic structure

Ist Teil von

• Scientific reports, 2016-01, Vol.6 (1), p.19446, Article 19446

Ort / Verlag

London: Nature Publishing Group UK

Erscheinungsjahr

2016

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Crystalline atomic layers on solid surfaces are composed of a single building block, unit cell, that is copied and stacked together to form the entire two-dimensional crystal structure. However, it appears that this is not an unique possibility. We report here on synthesis and characterization of the one-atomic-layer-thick Tl x Bi 1− x compounds which display quite a different arrangement. It represents a quasi-periodic tiling structures that are built by a set of tiling elements as building blocks. Though the layer is lacking strict periodicity, it shows up as an ideally-packed tiling of basic elements without any skips or halting. The two-dimensional Tl x Bi 1− x compounds were formed by depositing Bi onto the Tl-covered Si(111) surface where Bi atoms substitute appropriate amount of Tl atoms. Atomic structure of each tiling element as well as arrangement of Tl x Bi 1− x compounds were established in a detail. Electronic properties and spin texture of the selected compounds having periodic structures were characterized. The shown example demonstrates possibility for the formation of the exotic low-dimensional materials via unusual growth mechanisms.