Fundamental physics in field electron emission

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• Prof. Shidong Liang, School of Physics, Sun Yat-Sen University, Guangzhou, China
• Thursday 07 April 2016, 11:00-12:00
• Centre for Mathematical Sciences, meeting room MR2.

If you have a question about this talk, please contact Dr Christopher John Edgcombe.

Field electron emission plays an important role in the vacuum electronic technology. The recent advantage in the experimental technology of field emission inspires us to think about some fundamental physics in field emission. In this talk, I shall present four topics. The first is how to identify the image potential for non-metallic emitter. I propose a scheme to distinguish whether the image potential exists in non-metallic emitter. The second is the theoretical studies on the basic principles of the spin-polarized field emission. I study two basic models of the spin-polarized field emission to find out some hints for the experimental investigation of the spin-polarized field emission. In the third topic, I shall propose a scheme to estimate the quantum tunneling time based on field emission. Finally, I shall talk about some fundamental problems and difficulties in the interplay between experiment and theory in field emission.

This talk is part of the Thin-Film Magnetism Group series.

This talk is included in these lists:

• Centre for Mathematical Sciences, meeting room MR2
• Thin-Film Magnetism Group

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