Figure 3: Concerted switch of Pb3.
From: Room-temperature-concerted switch made of a binary atom cluster
(a,b; Left) Experimental STM topographic images (It=20 pA and Vs=+0.5 V) and (right) the corresponding structural models derived from the density functional theory calculation, showing a pair of conformational switching. The two conformations are distinguished by the labels L (a) and R (b). Solid lines in STM images indicate the chiral axes. Red and blue crosses show the substitutional Pb (Pbsub) site and the substitutional Si (Sisub) site, respectively. (c) Simultaneous current and frequency-shift traces (switch time chart) during the voltage pulse application (Vs=+1.8 V). Through the measurement, the tip was fixed at identical sites (the Pbsub site in the L state and the Sisub site in the R state). The high- and low-current states correspond to the L (a) and R (b) states, respectively.
