Humboldt-Universität zu Berlin - Mathematisch-Naturwissen­schaft­liche Fakultät - Institut für Physik

Humboldt-Universität zu Berlin | Mathematisch-Naturwissen­schaft­liche Fakultät | Institut für Physik | Kolloquium | Alle Termine | Habilitandenkolloquium: Dr. Mykhaylo P. Semtsiv (HU, Institut für Physik)

Habilitandenkolloquium: Dr. Mykhaylo P. Semtsiv (HU, Institut für Physik)

Vortrag zum Thema "Phase Change Materials and non-volatile memory application"
  • Wann 29.06.2021 von 15:15 bis 17:00 (Europe/Berlin / UTC200)
  • Wo Zoom
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Habilitandenkolloquium: Dr. Mykhaylo P. Semtsiv (HU, Institut für Physik) spricht zum Thema "Phase Change Materials and non-volatile memory application"

Der Kolloquiumsvortrag wird virtuell mithilfe von Zoom durchgeführt. Die Anmeldedaten werden im Vorfeld über die üblichen Mailverteiler versandt oder können unter gd-at-physik.hu-berlin.de erfragt werden.

 

Abstract

Mankind is used to exploit phase transitions for various purposes of everyday life. Ice is used since ages for cooling purposes, wax-like materials are used in modern energy-saving housing for heat storage, and heating pads are widely used for body comfort in cold environment.

A particular phase-change transition was discovered in chalcogenide glasses by Stanford R. Ovshinsky back in 1968. It is a transition from the amorphous phase into polycrystalline and vice versa as a result of a short heat treatment by electrical current pulse. The strong contrast in the resistivity between amorphous and crystalline states allows for the electrical determination of the phase and thus for use of such a phenomenon in memory elements with electrical readout of the stored data. The new non-volatile storage-class 3D-XPoint memory chips mass-produced jointly by Intel and Micron since 2015 are based on the very same phenomenon.

In this talk we will review the physics of the phase transition in chalcogenide glasses, the history of their invention, and the modern applications.