Yayınlanmış 1 Ocak 2020 | Sürüm v1
Dergi makalesi Açık

Kagome-like silicene: A novel exotic form of two-dimensional epitaxial silicon

  • 1. Uppsala Univ, Dept Phys & Astron, SE-75236 Uppsala, Sweden
  • 2. KTH Royal Inst Technol, Mat & Nanophys, Electrum 229, SE-16440 Kista, Sweden
  • 3. Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
  • 4. Izmir Inst Technol, Dept Phys, TR-35430 Izmir, Turkey
  • 5. Izmir Inst Technol, Dept Photon, TR-35430 Izmir, Turkey
  • 6. Aix Marseille Univ, CNRS, PIIM, Marseille, France

Açıklama

Since the discovery of graphene, intensive efforts have been made in search of novel two-dimensional (2D) materials. Decreasing the materials dimensionality to their ultimate thinness is a promising route to unveil new physical phenomena, and potentially improve the performance of devices. Among recent 2D materials, analogs of graphene, the group IV elements have attracted much attention for their unexpected and tunable physical properties. Depending on the growth conditions and substrates, several structures of silicene, germanene, and stanene can be formed. Here, we report the synthesis of a Kagome-like lattice of silicene on aluminum (1 1 1) substrates. We provide evidence of such an exotic 2D Si allotrope through scanning tunneling microscopy (STM) observations, high-resolution core-level (CL) and angle-resolved photoelectron spectroscopy (ARPES) measurements, along with Density Functional Theory calculations.

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