Femtosecond x-ray diffraction reveals a liquid–liquid phase transition in phase-change materials-Reference-Cited by-同舟云学术

Femtosecond x-ray diffraction reveals a liquid–liquid phase transition in phase-change materials

Published:2019-06-14 Issue:6445 Volume:364 Page:1062-1067
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Zalden Peter¹²³^ORCID,Quirin Florian⁴,Schumacher Mathias⁵,Siegel Jan⁶^ORCID,Wei Shuai⁷^ORCID,Koc Azize⁴⁸,Nicoul Matthieu⁴^ORCID,Trigo Mariano¹²,Andreasson Pererik⁹^ORCID,Enquist Henrik⁹,Shu Michael J.¹⁰,Pardini Tommaso¹¹,Chollet Matthieu¹²^ORCID,Zhu Diling¹²,Lemke Henrik¹²¹³,Ronneberger Ider⁵^ORCID,Larsson Jörgen⁹^ORCID,Lindenberg Aaron M.¹²¹⁴^ORCID,Fischer Henry E.¹⁵,Hau-Riege Stefan¹¹^ORCID,Reis David A.¹²^ORCID,Mazzarello Riccardo⁵^ORCID,Wuttig Matthias⁷¹⁶^ORCID,Sokolowski-Tinten Klaus⁴^ORCID

Affiliation:

1. Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA.

2. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA.

3. European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany.

4. Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstrasse 1, 47048 Duisburg, Germany.

5. Institut für Theoretische Festkörperphysik, JARA-FIT and JARA-HPC, RWTH Aachen University, Germany.

6. Instituto de Optica, CSIC, C/Serrano 121, 28006 Madrid, Spain.

7. I. Physikalisches Institut and JARA-FIT, RWTH Aachen, Sommerfeldstrasse 14, 52074 Aachen, Germany.

8. Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany.

9. Department of Physics, Lund University, Professorsgatan 1, 223 62 Lund, Sweden.

10. Department of Applied Physics, Stanford University, Stanford, CA 94305, USA.

11. Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.

12. Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA.

13. Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen, Switzerland.

14. Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.

15. Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, 38042 Grenoble Cedex 9, France.

16. PGI 10 (Green IT), Forschungszentrum Jülich, 52428 Jülich, Germany.

Abstract

Structural switch for fast switching Phase-change materials are important for computer memory. They can quickly switch from glassy to crystalline using a thermal pulse and then lock in that structure for a long time at lower temperature. Zalden et al. probed the underlying atomic structure of two phase-change materials during this switching using ultrafast x-rays and simulations (see the Perspective by Rao et al. ). A liquid-liquid phase transition in both materials allowed fast switching at high temperatures. The lower-temperature glass locks in the structure, allowing for long-term memory storage. Science , this issue p. 1062 ; see also p. 1032

Funder

U.S. Department of Energy

Deutsche Forschungsgemeinschaft

JARA-HPC from RWTH Aachen University

Swedish Science Council

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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