Toward Single Atom Chains with Exfoliated Tellurium

نویسندگان

  • Hugh O. H. Churchill
  • Gregory J. Salamo
  • Shui-Qing Yu
  • Takayuki Hironaka
  • Xian Hu
  • Jeb Stacy
  • Ishiang Shih
چکیده

We demonstrate that the atom chain structure of Te allows it to be exfoliated as ultra-thin flakes and nanowires. Atomic force microscopy of exfoliated Te shows that thicknesses of 1-2 nm and widths below 100 nm can be exfoliated with this method. The Raman modes of exfoliated Te match those of bulk Te, with a slight shift (4 cm-1) due to a hardening of the A1 and E modes. Polarized Raman spectroscopy is used to determine the crystal orientation of exfoliated Te flakes. These experiments establish exfoliation as a route to achieve nanoscale trigonal Te while also demonstrating the potential for fabrication of single atom chains of Te.

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عنوان ژورنال:

دوره 12  شماره 

صفحات  -

تاریخ انتشار 2017