Emergent Iontronics

Yoshihiro Iwasa, Department of Applied Physics and Quantum-Phase Electronics Center, University of Tokyo, Japan

In your mobile phones, there are two kinds of important devices, billions of transistors and a battery. The transistor controls electron flow in a semiconductor to enable processing and storage of information, while the latter stores electrochemical energy for driving the former. In the latest decade, devices with combined concepts of transistors and batteries, electrochemical transistors, are receiving increasing interests, because they can offer new opportunities beyond conventional current switching functions of all solid transistors.

One of surprises comes from a simple replacement of solid gate dielectrics in field effect transistors (FETs) with electrolytes, which produces an innovative concept of field effect phase control in a variety of materials, including superconductors, ferromagnets, Mott insulators, and even metals. Current status of emergent “iontronics”, electronics based on ionic functions, will be reviewed.

References

[1] M. Kawasaki and Y. Iwasa, Nature 489, 510 (2012).

[2] K. Ueno et al., Nat. Mater. 7, 855 (2008).

[3] J. T. Ye et al., Nat. Mater. 9, 125 (2010).

[4] K. Ueno et al., Nat. Nanotechnol. 6, 408 (2011).

[5] Y. Yamada et al., Science 127, 1065 (2011).

[6] J. T. Ye et al. Proc. Nat. Acc. Sci. USA 108, 13002 (2011).

[7] M. Nakano et al., Nature 487, 459 (2012).

[8] J. G. Checkelsky et al., Nat. Phys. 8, 729 (2012).

[9] J. T. Ye et al., Science 338, 1193 (2012).

Site web du groupe du Prof. Iwasa

Cette conférence est présentée par le RQMP Versant Nord du Département de physique de l'Université de Montréal et le Département de génie physique de Polytechnique Montréal.