Erratum: Efficiency of harvesting energy from colored noise by linear oscillators [Phys. Rev. E 88, 022124 (2013)]

Figure 3

Maximum net electrical power $P^{*}$, overall efficiency at maximum power ${\eta }^{*}$, and characteristic frequency of the noise at maximum power ${\lambda }^{*}$, as a function of $k_c$ and $k_v$. In (b) the efficiency exceeds 1 as $k_c$ increases, due to the fact that the parameter values were chosen to be the same as in the original paper. As discussed in the text, the physically acceptable regime corresponds to ${\eta }^{*}<1$.