2024-03-28T16:29:32Z
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2023-01-16T04:22:23Z
336:695:696
Self-assembled honeycomb lattice in the monolayer of cyclic thiazyl diradical BDTDA (= 4,4′-bis(1,2,3,5-dithiadiazolyl)) on Cu(111) with a zero-bias tunneling spectra anomaly
Yamamoto, Masayuki
95818
Suizu, Rie
95819
Dutta, Sudipta
95820
Mishra, Puneet
95821
Nakayama, Tomonobu
95822
Sakamoto, Kazuyuki
95823
Wakabayashi, Katsunori
95824
Uchihashi, Takashi
95825
Awaga, Kunio
95826
Electronic properties and materials
Structural properties
Scanning tunneling microscopy (STM) observation reveals that a cyclic thiazyl diradical, BDTDA (= 4,4′-bis(1,2,3,5-dithiadiazolyl)), forms a well-ordered monolayer honeycomb lattice consisting of paramagnetic corners with unpaired electrons on a clean Cu(111) surface. This BDTDA lattice is commensurate with the triangular lattice of Cu(111), with the former being 3 × 3 larger than the latter. The formation of the BDTDA monolayer structure, which is significantly different from its bulk form, is attributed to an interaction with the metal surface as well as the intermolecular assembling forces. STM spectroscopy measurements on the BDTDA molecules indicate the presence of a characteristic zero-bias anomaly centered at the Fermi energy. The origin of this zero-bias anomaly is discussed in terms of the Dirac cones inherent to the honeycomb structure.
journal article
Nature
2015-12-17
application/pdf
Scientific Reports
1
5
18359
2045-2322
https://nagoya.repo.nii.ac.jp/record/29227/files/srep18359.pdf
eng
https://doi.org/10.1038/srep18359
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