Figure 5: LAO thickness effect on conductivity switching.
From: Giant conductivity switching of LaAlO3/SrTiO3 heterointerfaces governed by surface protonation
R versus twater (left) and tlight (right) measured for LAO/STO samples with different numbers of unit cells of LAO. Measurement uncertainty is smaller than the data markers in all cases. Note that times twater and tlight indicate cumulative exposure to water and light, respectively. Sheet resistance R normalized by the value before the first water immersion R0=R(twater=0). The data corresponding to the 7 uc and 8 uc samples are difficult to distinguish because neither deviates more than 10% away from unity.
