Dirac cone in a non-honeycomb surface alloy
P Sadhukhan, D Pandey, VK Singh, S Sarkar… - arXiv preprint arXiv …, 2018 - arxiv.org
arXiv preprint arXiv:1812.06508, 2018•arxiv.org
We demonstrate unexpected occurrence of linear bands resembling Dirac cone at the zone-
center of Au $ _2 $ Sn surface alloy with $\left (\begin {smallmatrix} 2&1\\1&3\end
{smallmatrix}\right) $ surface structure formed by deposition of about 0.9 ML Sn on Au (111)
at elevated temperature. The surface exhibits an oblique symmetry with unequal lattice
constants making it the first two dimensional surface alloy to exhibit Dirac cone with a non-
honeycomb lattice.
center of Au $ _2 $ Sn surface alloy with $\left (\begin {smallmatrix} 2&1\\1&3\end
{smallmatrix}\right) $ surface structure formed by deposition of about 0.9 ML Sn on Au (111)
at elevated temperature. The surface exhibits an oblique symmetry with unequal lattice
constants making it the first two dimensional surface alloy to exhibit Dirac cone with a non-
honeycomb lattice.
We demonstrate unexpected occurrence of linear bands resembling Dirac cone at the zone-center of AuSn surface alloy with $\left( \begin{smallmatrix} 2&1\\ 1&3 \end{smallmatrix} \right)$ surface structure formed by deposition of about 0.9 ML Sn on Au(111) at elevated temperature. The surface exhibits an oblique symmetry with unequal lattice constants making it the first two dimensional surface alloy to exhibit Dirac cone with a non-honeycomb lattice.
arxiv.org
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