Laser-driven switching dynamics in phase change materials investigated by time-resolved X-ray absorption spectroscopy

Jos E. Boschker, Rui Ning Wang, Valeria Bragaglia, Paul Fons, Alessandro Giussani, Loic Le Guyader, Martin Beye, Ilie Radu, Alexander V. Kolobov, Karsten Holldack, Raffaella Calarco

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Time-dependent X-ray absorption spectroscopy at the Ge L3 edge is used to study the optical switching dynamics of epitaxial phase change materials grown on Si(111) membranes. Small differences between the static absorption spectra of the crystalline and laser-amorphized phase of GeTe are observed. Furthermore, a new approach for pump-probe studies on phase change materials is presented. However, no time-dependent change in the X-ray absorption > 0.1% has been detected so far. This is mainly attributed to sample deterioration at 3 kHz pump-probe rates.

Original languageEnglish
Pages (from-to)82-89
Number of pages8
JournalPhase Transitions
Volume88
Issue number1
DOIs
Publication statusPublished - 2015 Jan 2
Externally publishedYes

Keywords

  • molecular beam epitaxy
  • phase change materials
  • switching
  • X-ray absorption spectroscopy

ASJC Scopus subject areas

  • Instrumentation
  • Materials Science(all)

Fingerprint Dive into the research topics of 'Laser-driven switching dynamics in phase change materials investigated by time-resolved X-ray absorption spectroscopy'. Together they form a unique fingerprint.

  • Cite this

    Boschker, J. E., Wang, R. N., Bragaglia, V., Fons, P., Giussani, A., Le Guyader, L., Beye, M., Radu, I., Kolobov, A. V., Holldack, K., & Calarco, R. (2015). Laser-driven switching dynamics in phase change materials investigated by time-resolved X-ray absorption spectroscopy. Phase Transitions, 88(1), 82-89. https://doi.org/10.1080/01411594.2014.971322