Dirac cone in a non-honeycomb surface alloy

Pampa Sadhukhan, Dhanshree Pandey, Vipin Kumar Singh +5

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}…