Transient Structural Transition in Ovonic Threshold Switching Glass
Yeon‐Woo Seong,
Hoedon Kwon,
Changwoo Lee
et al.
Abstract:Ovonic threshold switching (OTS), characterized by a rapid resistance drop in chalcogenide glass, has enabled the realization of memory and selectors. Despite over five decades of development, the challenges in characterizing the transient switching in amorphous materials upon reaching the threshold voltage have hindered the establishment of its underlying mechanism. This study uses femtosecond terahertz spectroscopy and ab initio simulation to elucidate the dynamics of the free‐carrier and IR‐active phonons i… Show more
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