Single germanene phase formed by segregation through Al(111) thin films on Ge(111)
Single germanene phase formed by segregation through Al(111) thin films on Ge(111)
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通过 Ge(111) 上的 Al(111) 薄膜偏析形成单锗烯相
DOI:
10.1088/2053-1583/ac2bef
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发表时间:
2021
期刊:
影响因子:
5.5
通讯作者:
Lay Guy Le
中科院分区:
文献类型:
--
作者:
Yuhara Junji;Muto Hiroaki;Araidai Masaaki;Kobayashi Masato;Ohta Akio;Miyazaki Seiichi;Takakura Sho-ichi;Nakatake Masashi;Lay Guy Le
We have obtained single phase monolayer germanene on aluminum (111) thin films grown on a germanium (111) template by atomic segregation epitaxy, a preparation method differing from molecular beam epitaxy used in previous works. This 2× 2 reconstructed germanene phase matching an Al (111) 3× 3 supercell has been prepared in large areas upon annealing at 430 C. Detailed studies have been carried out using scanning tunneling microscopy (STM), low-energy electron diffraction, Auger electron spectroscopy, and synchrotron radiation photoemission spectroscopy. First-principles calculations based on the density function theory along with atomic-scale STM images reveal the atomic structure with one protruding Ge atom per 2× 2 germanene supercell and a characteristic dispersing band originating from the germanene sheet slightly coupled to the first layer Al atoms underneath. Instead, upon annealing at lower temperatures, multi-phase regions comprise twisted germanene domains in correspondence with an Al (111)√ 7×√ 7 R±19.1 superstructure as obtained in previous studies.
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DOI:
10.5109/1495160
发表时间:
2014
期刊:
--
影响因子:
--
作者:
S. Rahman;T. Nakagawa;S. Mizuno
通讯作者:
S. Mizuno
影响因子:
1.5
作者:
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通讯作者:
J. Yuhara;G. Le Lay
影响因子:
8.6
作者:
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通讯作者:
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影响因子:
10.8
作者:
Derivaz, Mickael;Dentel, Didier;Pirri, Carmelo
通讯作者:
Pirri, Carmelo
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
小林 征登;大田 晃生;田岡 紀之;池田 弥央;牧原 克典;宮﨑 誠一
通讯作者:
宮﨑 誠一