Sub-Nanosecond Time-Resolved Structural Measurements of the Phase-Change Alloy Ge2Sb2Te5

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概要

• 論文の詳細を見る

• Phase-change alloys constitute the basis for a widening collection of storage technologies both optical and electrical. These uses of phase-change alloys are characterized by switching material properties either by laser irradiation or by an electric current on the nanosecond time scale. Considering the conflicting requirements for high-speed switching, yet long term data storage integrity, a deeper understanding of the switching processes in these materials is essential for insightful application development. We have used synchrotron-based time-resolved X-ray absorption fine structure spectroscopy (XAFS), a technique equally suitable for amorphous and crystalline phases to elaborate details in structural changes in the phase-change process on a sub-nanosecond time scale using optical pump/X-ray probe techniques. In this work, we present initial results of sub-nanosecond laser excitation of the laser-reamorphized state of Ge2Sb2Te5. The technique is general and can be applied to a wide variety of nanoscale structures.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2007-06-30

著者

• Uruga Tomoya

  Spring-8 Japan Synchrotron Radiation Research Institute

• Fukaya Toshio

  Center For Applied Near-field Optics Research (can-for) National Institute Of Advanced Industrial Sc

• Fons Paul

  Center For Applied Near-field Optics Research (can-for) Aist

• Kawamura Naomi

  Spring-8 Jasri

• Tominaga Junji

  Center For Applied Near-field Optics Research (can-for) Aist

• Tanida Hajime

  Spring-8 Japan Synchrotron Radiation Research Institute (jasri)

• Fons Paul

  Center for Applied Near-Field Optics Research (CAN-FOR), National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8562, Japan

• Kolobov A.

  Center for Applied Near-Field Optics Research (CAN-FOR), National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8562, Japan

• Suzuki Motohiro

  SPring-8, Japan Synchrotron Radiation Institute, Kouto, Sayo, Hyogo 679-5148, Japan

• Takagaki Masafumi

  SPring-8, Japan Synchrotron Radiation Institute, Kouto, Sayo, Hyogo 679-5148, Japan

• Ohsawa Hitoshi

  SPring-8, Japan Synchrotron Radiation Institute, Kouto, Sayo, Hyogo 679-5148, Japan

• Uruga Tomoya

  SPring-8, Japan Synchrotron Radiation Institute, Kouto, Sayo, Hyogo 679-5148, Japan

• TANIDA Hajime

  Experimental Facilities Division, Japan Synchrotron Radiation Research Institute

• Tanida Hajime

  SPring-8, Japan Synchrotron Radiation Institute, Kouto, Sayo, Hyogo 679-5148, Japan

• Tanida Hajime

  Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan

• Tominaga Junji

  Center for Applied Near-Field Optics Research (CAN-FOR), National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8562, Japan

• Tominaga Junji

  Center for Applied Near Field Optics Research (CAN-FOR), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8562, Japan

• Fukaya Toshio

  Center for Applied Near-Field Optics Research (CAN-FOR), National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8562, Japan

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