Vendredi 25 Novembre 2022 à 11h00, Javier del Valle (Université de Genève) donnera un séminaire sur les "Bases et applications de la transition métal-isolant induite par la tension" (Fundamentals and applications of the voltage-triggered insulator to metal transition).
Abstract
Many correlated oxides feature an insulator to metal transition (IMT) with a large change of resistivity. Generally, these transitions can also be induced electrically, a phenomenon known as voltage-triggered IMT [1,2]. The associated volatile resistive switching has attracted a lot of attention due to potential applications in optoelectronics, neuromorphic computing or rf switches [3].
Despite the wide interest, the fundamental aspects of this voltage-triggered IMT are not well understood. In this talk I will discuss the underlying physics of this phenomenon [1], including topics such as what governs the characteristic length- and time-scales [2,4].
I will also review the current efforts towards applications, with an emphasis on neuromorphic [3,5,6] and probabilistic computing [7].
References
[1] J. del Valle et al. Science 373, 907 (2021).
[2] Y. Kalcheim et al. Nat. Comm. 11, 2985 (2020).
[3] J. del Valle et al. Journal of Applied Physics 124 211101 (2018).
[4] J. del Valle et al. Nature 569, 388 (2019).
[5] J. del Valle et al. Scientific Reports 10, 4292 (2020).
[6] S. Oh et al. Nature Nanotechnology 16, 680 (2021).
[7] J. del Valle et al. Nano Letters 22, 1251 (2022).
