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

doi:10.1080/01411594.2014.971322

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 journal › Article › peer-review

3 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 language	English
Pages (from-to)	82-89
Number of pages	8
Journal	Phase Transitions
Volume	88
Issue number	1
DOIs	https://doi.org/10.1080/01411594.2014.971322
Publication status	Published - 2015 Jan 2
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Instrumentation
Materials Science(all)

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10.1080/01411594.2014.971322

Cite this

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

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.",

keywords = "X-ray absorption spectroscopy, molecular beam epitaxy, phase change materials, switching",

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

note = "Funding Information: This work was partially supported by EU within the FP7 project PASTRY [grant number GA 317746].",

year = "2015",

month = jan,

day = "2",

doi = "10.1080/01411594.2014.971322",

language = "English",

volume = "88",

pages = "82--89",

journal = "Phase Transitions",

issn = "0141-1594",

publisher = "Taylor and Francis Ltd.",

number = "1",

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T1 - Laser-driven switching dynamics in phase change materials investigated by time-resolved X-ray absorption spectroscopy

AU - Boschker, Jos E.

AU - Wang, Rui Ning

AU - Bragaglia, Valeria

AU - Fons, Paul

AU - Giussani, Alessandro

AU - Le Guyader, Loic

AU - Beye, Martin

AU - Radu, Ilie

AU - Kolobov, Alexander V.

AU - Holldack, Karsten

AU - Calarco, Raffaella

N1 - Funding Information: This work was partially supported by EU within the FP7 project PASTRY [grant number GA 317746].

PY - 2015/1/2

Y1 - 2015/1/2

N2 - 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.

AB - 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.

KW - X-ray absorption spectroscopy

KW - molecular beam epitaxy

KW - phase change materials

KW - switching

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JO - Phase Transitions

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IS - 1

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

Abstract

Keywords

ASJC Scopus subject areas

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