The timely and the unexpected; spin resolved ARPES on systems with strong spin-orbit interaction

DIPC Seminars

Speaker: Hugo Dil
When: 2010/08/19
14:00
Place: Donostia International Physics Center (DIPC).Paseo Manuel de Lardizabal, 4 (nearby the Facultad de Quimica), Donostia
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The timely and the unexpected; spin resolved ARPES on systems with strong spin-orbit interaction

In recent years spin- and angle-resolved photoemission (SARPES) have proven to be a powerful tool for the investigation of spin effects on surfaces. After an overview of the possibilities and challenges of SARPES I will present some of our recent results on low-dimensional systems with strong spin-orbit interaction. A prime example of how little is still understood about the role of the spin in the photoemission process is formed by the observation of spin interference in photoemission from long range ordered Sb on Ag(111) surface alloys. After this basic quantum mechanical principle I will quickly review my experimentalist understanding of topological insulators and present our SARPES results on these only recently discovered new material phases. Examples will include both binary and tertiary compounds.