How do collective interactions emerge? Superconducting and ferroic systems at the nanoscale |
TYPE | Low-Temp seminar |
Speaker: | Yachin Ivry |
Affiliation: | MIT |
Date: | 11.12.2014 |
Time: | 14:30 |
Location: | Lidow Nathan Rosen (300) |
Abstract: |
Understanding the competition between order and disorder in nature is a major task in physics. Such competition conveniently We will discuss the ferroelectric size-dependence that has been realised with a high-resolution ferroic domain imaging tool (functional atomic-force microscopy) that I developed.2,3 Specifically, I will introduce recently-discovered hybrid ferroelectric-ferroelastic domain types, each of which is stable at a different typical length-scale.4 Moreover, I will show how the revealed coexistence of these domains assists us in resolving the dispute over the ferroelectric domain switching mechanism (nucleation and growth versus nucleation-frustrated).5 Likewise, size effects in superconductivity near the superconducting-to-insulating transition will be presented, mainly by introducing a recently-found universal scaling law and discussing its origin.6 I will demonstrate how the discovered universality predicts the superconducting behaviour at the nanoscale and facilitates advanced nano-superconducting systems (e.g. graphene-superconductor hybrids). In addition, I will introduce devices that benefit and result from the above discoveries, such as improved single photon detectors7 and switching devices,2 thermal sensors8 and programmable RF electro-mechanical resonators.9 Finally, I will examine future avenues for exposing the onset of collective interactions in superconducting and ferroic systems that are a direct continuation of the above work. References: 1. J. F. Scott Science 315 954 (2007); F. Marsili et al. Nano Lett 11 2048 (2011). 2. Y. Ivry et al. APL. 94 162903 (2009); Y. Ivry et al. (In press, Springer, 2014); 3. Y. Ivry et al. PRL 104 207602 (2010); C. Durkan et al. APL 97 046102 (2010). 4. Y. Ivry et al. Nanotech 21 065702 (2010); Y. Ivry et al. Nano Lett 11 4619 (2011); Y. Ivry et al. Adv Funct Mater 21 1827 (2011); Y. Ivry et al. Adv Funct Mater 24 5567 (2014). 5. 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)]. 7. Q. Zhao et al. APL 103, 142602 (2013); Q. Zhao et al. Opt Exp 22 24574 (2014); 8. Y. Ivry et al. APL 90 172905 (2007); 9. Y. Ivry et al. APL 104 133505 (2014). |