Angle-resolved photoelectron spectroscopy of the (8.88×8.88) incommensurate surface reconstruction of Cu on Ge(111),Physical Review B

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Angle-resolved photoelectron spectroscopy of the (8.88×8.88) incommensurate surface reconstruction of Cu on Ge(111)
Physical Review B ( IF 3.2 ) Pub Date : 2024-11-08 , DOI: 10.1103/physrevb.110.205414
Mathis Cameau _{1,

2} , Tristan Cren _{1,

2} , Pascal David _{1,

2} , François Debontridder _{1,

2} , Natalia Olszowska ₃ , Marcin Rosmus ₃ , Mathieu G. Silly ₄ , Marie D'angelo _{1,

2}

Affiliation

In this study we revisit the properties of the

(″ 8.88 \times 8.88 ″) R 30 \circ

surface reconstruction obtained by evaporation of Cu on Ge(111), motivated by the predictions of Dirac nodal lines in two-dimensional

C u 2 G e

monolayer. After providing an updated version of the band structure of Ge(111) by angle-resolved photoemission (ARPES), we present the band structure of the

C u / G e (111) - (8.88 \times 8.88) R 30 \circ

surface, which presents two surface bands, with having linear dispersion at the Fermi level.

中文翻译：

Cu 在 Ge（111）上（8.88×8.88）不相称的表面重构的角度分辨光电子能谱

在这项研究中，我们重新审视了通过在 Ge（111）上蒸发 Cu 获得的（“888×888”）R30∘ 表面重建的性质，其动机是二维 Cu2Ge 单层中狄拉克节点线的预测。在通过角度分辨光电子发射（ARPES）提供了 Ge（111）能带结构的更新版本之后，我们提出了 Cu/Ge（111）−（888×888）R30∘ 表面的能带结构，它呈现两个表面带，在费米能级具有线性色散。

更新日期：2024-11-08

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