Figure 3
From: Electrically induced colossal capacitance enhancement in LaAlO3/SrTiO3 heterostructures
Frequency dependence of capacitance enhancement. (a) C-V curves measured at frequencies from 1 to 10 kHz demonstrate that the hysteresis becomes more pronounced with decreasing frequency. The hysteretic C-V curve almost disappears as the frequency increases beyond 10 kHz. (b) The HCS and LCS increases with decreasing frequency; the HCS is more sensitive to the frequency than the LCS. Correspondingly, the capacitance enhancement increases with decreasing frequency, up to 500% at a frequency of 200 Hz.
