This title appears in the Scientific Report :
2016
Epitaxial trigonal Ge-Sb-Te alloys: model materials for future low energy consumption non-volatile memory applications?
Epitaxial trigonal Ge-Sb-Te alloys: model materials for future low energy consumption non-volatile memory applications?
The interfacial phase change memory (iPCM) based on GeTe-Sb2Te3 superlattices has been reported to be a suitable approach to reduce energy consumption in data storage applications. A field-induced transition from the conductive to the highly resistive state is postulated to occur from one solid phas...
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Personal Name(s): | Hardtdegen, Hilde (Corresponding author) |
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Riess, Sally / Schuck, Martin / Keller, Kristof / Jost, Christian / Bornhöfft, Manuel / Du, Hongchu / Schwedt, Alexander / Mayer, Joachim / Roth, Georg / Mussler, Gregor / von der Ahe, Martina / Grützmacher, Detlev / Mikulics, Martin | |
Contributing Institute: |
Mikrostrukturforschung; PGI-5 Halbleiter-Nanoelektronik; PGI-9 |
Imprint: |
2016
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Conference: | CIMTEC, Perugia (Italy), 2016-06-05 - 2016-06-09 |
Document Type: |
Conference Presentation |
Research Program: |
Controlling Configuration-Based Phenomena |
Publikationsportal JuSER |
The interfacial phase change memory (iPCM) based on GeTe-Sb2Te3 superlattices has been reported to be a suitable approach to reduce energy consumption in data storage applications. A field-induced transition from the conductive to the highly resistive state is postulated to occur from one solid phase to another without melting. Recently, we presented the deposition of trigonal Ge1Sb2Te4 / Si (111) by the industrially relevant method metalorganic vapor phase epitaxy (MOVPE). The trigonal layers exhibit some structural “ingredients” of an iPCM superlattice. Here, detailed structural studies as well as first growth and characterization studies on further trigonal Ge-Sb-Te alloys will be shown. The studies indicate that alternating planes of cations and anions are present and that the Ge and Sb cations mix. The film accommodates to the substrate by forming defects within the first few nanometers of growth. All in all, the highly ordered trigonal Ge-Sb-Te alloys grown by MOVPE will contribute to the understanding, improvement and control of the iPCM switching mechanism still under debate. |