Phase change alloys are used as components for optical data storage like DVD and Blue-Ray disks but many of their conductive properties are only known phenomenologically. This paper reports detailed band structure mapping of the prototype alloy GST-225 using photoemission spectroscopy, and the observation of a Dirac-like surface state above the Fermi level.
- J. Kellner
- G. Bihlmayer
- M. Morgenstern
