论文标题
CU上的可爱链（111）通过1/3 ml TE的沉积：原子和电子结构
CuTe chains on Cu(111) by deposition of 1/3 ML Te: atomic and electronic structure
论文作者
论文摘要
使用低能量电子衍射（LEED），扫描隧道显微镜和光谱镜检查（STM/STS），扫描隧道的单层和垂直分辨率的单光照射型和两光密度的理论（ARPOPY）（ARPOPY（AR）ARPERY（ARPE），确定了Cu（111）沉积后的表面原子和电子结构（111）。计算。与文学中的当前状态相反，TE不会产生二维的表面合金，而是形式的Cu $ _2 $ _2 $ _2 $ ADSORBATE链中的$ \ left（2 \ sqrt {3} \ times \ times \ sqrt {3} {3} \ right）\ right）我们通过pendry $ r $ r = 0.099 $的高精度LEED-IV结构分析建立了这一点，并证实了DFT和STM结果。 The electronic structure of the surface phase is dominated by an anisotropic downward dispersing state at the Fermi energy $E_F$ and a more isotropic upward dispersing unoccupied state at $E-E_F = + 1.43\,\textrm{eV}$.两种状态都与投影带结构的宽大状态共存，因此是表面共振。
The surface atomic and electronic structure after deposition of 1/3 monolayer (ML) Te on Cu(111) was determined using a combination of low-energy electron diffraction (LEED), scanning tunneling microscopy and spectroscopy (STM/STS), angle-resolved single and two-photon photoelectron spectroscopy (ARPES /AR-2PPE) and density functional theory (DFT) calculations. Contrary to the current state in literature Te does not create a two-dimensional surface alloy but forms Cu$_2$Te$_2$ adsorbate chains in a $\left(2\sqrt{3} \times \sqrt{3}\right)\textrm{R30}^\circ$ superstructure. We establish this by a high-precision LEED-IV structural analysis with Pendry $R$ factor of $R = 0.099$ and corroborating DFT and STM results. The electronic structure of the surface phase is dominated by an anisotropic downward dispersing state at the Fermi energy $E_F$ and a more isotropic upward dispersing unoccupied state at $E-E_F = + 1.43\,\textrm{eV}$. Both states coexist with bulk states of the projected band structure and are therefore surface resonances.
