May 2019: Pankaj Sharma : "Nanoelectronic switch!”
6 August 2019
Naturally forming atomically-sharp interfaces called ‘domain walls’ arise in ferroelectric materials. Ferroelectric materials have asymmetric distribution of charge that results in the formation of electric dipoles (i.e. equal and opposite electrical charges separated by a distance). The regions with a uniform direction of dipoles pointing for instance either up or down are called ‘domains’. The boundaries that spatially separate these domains are domain walls. Interestingly, the domain walls can ‘conduct electricity’ in contrast to the insulating domains and bulk of the ferroelectric material. In our work, we utilize and electrically reconfigure these domain walls to realize a multi-level nanoelectronic switch that functions at the nanometre length scale.
Read the full paper, as published in Advanced Functional Materials (Volume 29, Issue 18, 2 May 2019, Article number 1807523).