Condensed Matter Seminar: Towards the onset of collective interactions: nano-functional systems
Dr. Yachin Ivry, MIT
Understanding the competition between order and disorder in nature is a major task of physics. Systems that exhibit a sudden emergence of collective interactions allow a unique glimpse into this competition. For instance, such ‘collectiveness’ conveniently exists at the superconducting-to-insulating transition (SIT) and the para-ferro transition. Yet, challenges associated with preparing and characterising nanoscale superconductors and ferroics have hindered their scientific and technological potential.[1,2] We will discuss the ferroelectric size-dependence,[2,3] including recently-discovered hybrid ferroelectric-ferroelastic domain types  that assist us in resolving the longstanding dispute over the ferroelectric domain switching mechanism. Likewise, universal size effects in superconductivity near the superconducting-to-insulating transition will be presented, as well as implications for advanced nano-superconducting systems. Finally, some potential future avenues for exposing the onset of collective interactions in superconducting and ferroic systems will be suggested.
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 Y. Y. Ivry et al. (In press, Springer, 2014).
 Ivry et al. APL. 94 162903 (2009).
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 Y. Ivry et al. PRB 86 205428 (2012); Y. Ivry et al. PRB 81 174118 (2010); 6. Y. Ivry et al. arXiv1407.5945 [In press PRB (2014)].
Seminar Organizer: Prof. Shimshon Barad