Femtosecond x-ray diffraction reveals a liquid–liquid phase transition in phase-change materials
Abstract
In phase-change memory devices, a material is cycled between glassy and crystalline states. The highly temperature-dependent kinetics of its crystallization process enables application in memory technology, but the transition has not been resolved on an atomic scale. Using femtosecond x-ray diffraction and ab initio computer simulations, we determined the time-dependent pair-correlation function of phase-change materials throughout the melt-quenching and crystallization process. We found a liquid–liquid phase transition in the phase-change materials Ag4In3Sb67Te26 and Ge15Sb85 at 660 and 610 kelvin, respectively. The transition is predominantly caused by the onset of Peierls distortions, the amplitude of which correlates with an increase of the apparent activation energy of diffusivity. As a result, this reveals a relationship between atomic structure and kinetics, enabling a systematic optimization of the memory-switching kinetics.
- Authors:
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- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA., Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA., European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany.
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstrasse 1, 47048 Duisburg, Germany.
- Institut für Theoretische Festkörperphysik, JARA-FIT and JARA-HPC, RWTH Aachen University, Germany.
- Instituto de Optica, CSIC, C/Serrano 121, 28006 Madrid, Spain.
- I. Physikalisches Institut and JARA-FIT, RWTH Aachen, Sommerfeldstrasse 14, 52074 Aachen, Germany.
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstrasse 1, 47048 Duisburg, Germany., Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany.
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA., Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA.
- Department of Physics, Lund University, Professorsgatan 1, 223 62 Lund, Sweden.
- Department of Applied Physics, Stanford University, Stanford, CA 94305, USA.
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA.
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA., Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen, Switzerland.
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA., Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
- Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, 38042 Grenoble Cedex 9, France.
- I. Physikalisches Institut and JARA-FIT, RWTH Aachen, Sommerfeldstrasse 14, 52074 Aachen, Germany., PGI 10 (Green IT), Forschungszentrum Jülich, 52428 Jülich, Germany.
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); German Research Foundation (DFG); European Union (EU); RWTH Aachen University; Ministry of Science and Innovation (MICINN); USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1527069
- Alternate Identifier(s):
- OSTI ID: 1532412; OSTI ID: 1860898
- Report Number(s):
- LLNL-JRNL-773308
Journal ID: ISSN 0036-8075; /sci/364/6445/1062.atom
- Grant/Contract Number:
- AC02-76SF00515; AC52-07NA27344; SFB 616 ”Energy Dissipation at Surfaces”; SFB 1242 “Non-Equilibrium Dynamics of Condensed Matter in the Time Domain”; So408/9-1; SFB 917 ”Nanoswitches”; Ma-5339/2-1; JARA0150 and JARA0183; 278162697; 280555; TEC2017-82464-R
- Resource Type:
- Published Article
- Journal Name:
- Science
- Additional Journal Information:
- Journal Name: Science Journal Volume: 364 Journal Issue: 6445; Journal ID: ISSN 0036-8075
- Publisher:
- American Association for the Advancement of Science (AAAS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Physics - Condensed matter physics
Citation Formats
Zalden, Peter, Quirin, Florian, Schumacher, Mathias, Siegel, Jan, Wei, Shuai, Koc, Azize, Nicoul, Matthieu, Trigo, Mariano, Andreasson, Pererik, Enquist, Henrik, Shu, Michael J., Pardini, Tommaso, Chollet, Matthieu, Zhu, Diling, Lemke, Henrik, Ronneberger, Ider, Larsson, Jörgen, Lindenberg, Aaron M., Fischer, Henry E., Hau-Riege, Stefan, Reis, David A., Mazzarello, Riccardo, Wuttig, Matthias, and Sokolowski-Tinten, Klaus. Femtosecond x-ray diffraction reveals a liquid–liquid phase transition in phase-change materials. United States: N. p., 2019.
Web. doi:10.1126/science.aaw1773.
Zalden, Peter, Quirin, Florian, Schumacher, Mathias, Siegel, Jan, Wei, Shuai, Koc, Azize, Nicoul, Matthieu, Trigo, Mariano, Andreasson, Pererik, Enquist, Henrik, Shu, Michael J., Pardini, Tommaso, Chollet, Matthieu, Zhu, Diling, Lemke, Henrik, Ronneberger, Ider, Larsson, Jörgen, Lindenberg, Aaron M., Fischer, Henry E., Hau-Riege, Stefan, Reis, David A., Mazzarello, Riccardo, Wuttig, Matthias, & Sokolowski-Tinten, Klaus. Femtosecond x-ray diffraction reveals a liquid–liquid phase transition in phase-change materials. United States. https://doi.org/10.1126/science.aaw1773
Zalden, Peter, Quirin, Florian, Schumacher, Mathias, Siegel, Jan, Wei, Shuai, Koc, Azize, Nicoul, Matthieu, Trigo, Mariano, Andreasson, Pererik, Enquist, Henrik, Shu, Michael J., Pardini, Tommaso, Chollet, Matthieu, Zhu, Diling, Lemke, Henrik, Ronneberger, Ider, Larsson, Jörgen, Lindenberg, Aaron M., Fischer, Henry E., Hau-Riege, Stefan, Reis, David A., Mazzarello, Riccardo, Wuttig, Matthias, and Sokolowski-Tinten, Klaus. Thu .
"Femtosecond x-ray diffraction reveals a liquid–liquid phase transition in phase-change materials". United States. https://doi.org/10.1126/science.aaw1773.
@article{osti_1527069,
title = {Femtosecond x-ray diffraction reveals a liquid–liquid phase transition in phase-change materials},
author = {Zalden, Peter and Quirin, Florian and Schumacher, Mathias and Siegel, Jan and Wei, Shuai and Koc, Azize and Nicoul, Matthieu and Trigo, Mariano and Andreasson, Pererik and Enquist, Henrik and Shu, Michael J. and Pardini, Tommaso and Chollet, Matthieu and Zhu, Diling and Lemke, Henrik and Ronneberger, Ider and Larsson, Jörgen and Lindenberg, Aaron M. and Fischer, Henry E. and Hau-Riege, Stefan and Reis, David A. and Mazzarello, Riccardo and Wuttig, Matthias and Sokolowski-Tinten, Klaus},
abstractNote = {In phase-change memory devices, a material is cycled between glassy and crystalline states. The highly temperature-dependent kinetics of its crystallization process enables application in memory technology, but the transition has not been resolved on an atomic scale. Using femtosecond x-ray diffraction and ab initio computer simulations, we determined the time-dependent pair-correlation function of phase-change materials throughout the melt-quenching and crystallization process. We found a liquid–liquid phase transition in the phase-change materials Ag4In3Sb67Te26 and Ge15Sb85 at 660 and 610 kelvin, respectively. The transition is predominantly caused by the onset of Peierls distortions, the amplitude of which correlates with an increase of the apparent activation energy of diffusivity. As a result, this reveals a relationship between atomic structure and kinetics, enabling a systematic optimization of the memory-switching kinetics.},
doi = {10.1126/science.aaw1773},
journal = {Science},
number = 6445,
volume = 364,
place = {United States},
year = {Thu Jun 13 00:00:00 EDT 2019},
month = {Thu Jun 13 00:00:00 EDT 2019}
}
https://doi.org/10.1126/science.aaw1773
Web of Science
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Works referencing / citing this record:
Data archive for "Femtosecond X-ray diffraction reveals a liquid-liquid phase transition in phase-change materials"
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