New Alloy of an Al-Chalcogen System: AlSe Surface Alloys on Al(111).
New Alloy of an Al-Chalcogen System: AlSe Surface Alloys on Al(111).
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Al-硫族系新型合金:Al(111) 上的 AlSe 表面合金
DOI:
10.1021/acsomega.2c05606
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发表时间:
2022-12-13
期刊:
影响因子:
4.1
通讯作者:
Song, Juntao
中科院分区:
文献类型:
--
作者:
Shao, Enze;Liu, Kai;Xie, Hao;Geng, Kaiqi;Bai, Keke;Qiu, Jinglan;Wang, Jing;Wang, Wen-Xiao;Song, Juntao
Metal chalcogenides are a promising material for novel physical research and nanoelectronic device applications. Here, we systematically investigate the crystal structure and electronic properties of AlSe alloys on Al(111) using scanning tunneling microscopy, angle-resolved photoelectron spectrometry, and first-principle calculations. We reveal that the AlSe surface alloy possesses a closed-packed atomic structure. The AlSe surface alloy comprises two atomic sublayers (Se sublayer and Al sublayer) with a height difference of 1.16 Å. Our results indicate that the AlSe alloy hosts two hole-like bands, which are mainly derived from the in-plane orbital of AlSe (px and py). These two bands located at about −2.22 ±0.01 eV around the Gamma point, far below the Fermi level, distinguished from other metal chalcogenides and binary alloys. AlSe alloys have the advantages of large-scale atomic flat terraces and a wide band gap, appropriate to serve as an interface layer for two-dimensional materials. Meanwhile, our results provide implications for related Al-chalcogen interfaces.
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影响因子:
3.7
作者:
Kresse, G;Furthmuller, J
通讯作者:
Furthmuller, J
影响因子:
5.5
作者:
Bouaziz, Meryem;Zhang, Wei;Bendounan, Azzedine
通讯作者:
Bendounan, Azzedine
影响因子:
3.7
作者:
Lu, Chih-Yuan;Adams, Jonathan A.;Ohuchi, Fumio S.
通讯作者:
Ohuchi, Fumio S.
影响因子:
3.7
作者:
Adams, JA;Bostwick, A;Olmstead, MA
通讯作者:
Olmstead, MA
影响因子:
1.9
作者:
JACOBI, K;MUSCHWITZ, CV;KAMBE, K
通讯作者:
KAMBE, K