Bonding and optical contrast in phase change memory materials

J. Robertson; Bolong Huang

doi:10.1002/pssb.201200361

Bonding and optical contrast in phase change memory materials

J. Robertson, Bolong Huang

Research output: Journal article publication › Journal article › Academic research › peer-review

5 Citations (Scopus)

Abstract

The large optical contrast between crystalline and amorphous phases of phase change memory materials is shown to arise from a large increase in the optical matrix elements which occurs when resonant bonding is present. Resonance requires aligned p orbitals, and is lost in the amorphous phases, irrespective of coordination number. Transitions in resonance can be engineered by superlattice structures. KGaA, Weinheim.

Original language	English
Pages (from-to)	1867-1873
Number of pages	7
Journal	Physica Status Solidi (B) Basic Research
Volume	249
Issue number	10
DOIs	https://doi.org/10.1002/pssb.201200361
Publication status	Published - 1 Oct 2012
Externally published	Yes

Keywords

Amorphous chalcogenides
Electronic structure
Modelling
Phase change materials

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

More information

10.1002/pssb.201200361

Cite this

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KW - Electronic structure

KW - Modelling

KW - Phase change materials

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