Acoustoelectric Effect in Graphene with degenerate Energy dispersion

The acoustoelectric effect $AE$ in Graphene with degenerate energy dispersion is theoretically studied for hypersound in the regime $ql >> 1$. At low temperatures ($k_{\beta}T <<1$), the non-linear dependence of Acoustoelectric current $j/j_0$ on the frequency $\omega_q$ and temperature $T$ are numerically analysed. The obtained graph for $j/j_0$ against $\omega_q$ qualitatively agreed with an experimentally obtained results. For $j/j_0$ versus $T$, the dependence of Acoustoelectric current in Graphene was found to manifest at low temperatures.