Extended Data Figure 9 : Transient optical transmission spectra during phase transformations.

From: Electric-field control of tri-state phase transformation with a selective dual-ion switch

Extended Data Figure 9

a, b, Time evolution of optical transmission spectra from 50-nm-thick SrCoO2.5 films grown on double-sided polished LSAT(001) substrate, with gating voltages of a, +3.5 V and b, −2.7 V. The results show clear phase transformations from SrCoO2.5 to HSrCoO2.5 (a), and from SrCoO2.5 to SrCoO3−δ (b). VIS, visible light; NIR, near-infrared.