APT User Meeting

Session

Advancement in Theory of Field Evaporation

20 Nov 2024, 09:00

Room 203 (large seminar room) (Max-Planck-Institut für Eisenforschung GmbH)

27. Theoretical Insights into Electric Field Effects on Metal Surfaces: Implications for Atomic-Scale Characterization

Shyam Katnagallu (Max Planck Institute for Sustainable Materials)

20/11/2024, 09:00

Understanding how high electric fields influence metal surfaces is essential for advancing atomic-scale characterization techniques. In this talk, I will present our theoretical investigations into electric field effects on metals, using density functional theory (DFT) calculations to provide insights relevant to experimental observations.
Firstly, we investigate vacancy formation in Ni and...

34. Local contrast in FIM - opportunities and limits of interpretation by comparison to theory

Christoph Freysoldt (Max Planck Institute for Sustainable Materials)

20/11/2024, 09:40

Local contrast in FIM - opportunities and limits of interpretation by comparison to theory

7. Comparing and integrating alternative theories of field ion imaging, and assessing what more needs to be done

Richard G. Forbes (University of Surrey)

20/11/2024, 10:00

Recent treatments of field-ion (FI) imaging theory (e.g., [1]) differ from older treatments (e.g., [2]). Modern theories consider the availability of in-specimen final electron states. Particularly with alloy specimens, this is long overdue and welcome. However, aspects of modern theories seem incompatible with older theories firmly backed by experiment, or incompatible with scientific...