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Conferences > UP > 2014 > 09.Wed.P3 > 09.Wed.P3.34

Anomalous phase change process in [(GeTe)2/(Sb2Te3)]20 superlattice observed by coherent phonon spectroscopy

K. Makino, Y. Saito, K. Mitrofanov, J. Tominaga, A. V. Kolobov, T. Nakano, P. Fons, and M. Hase

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Abstract

The temperature-dependent ultrafast lattice dynamics of topological (GeTe)2/(Sb2Te3) superlattice phase change memory material was investigated. By comparing with Ge-Sb-Te alloy, a clear contrast suggesting the unique phase change behavior was found.

© 2014 Optical Society of America

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