The Distinguished Lecture on “Electrically Programmable Nanomagnetic Ising Network” will take place as follows:
Date: 22 November 2024 (Friday)
Time: 10:00 a.m. – 11:00 a.m.
Venue: Research Building N21, 3004
The speaker is:
Prof. LUO Zhaochu, Assistant Professor, the School of Physics, Peking University, Beijing, China
The Lecture is:
Electrically Programmable Nanomagnetic Ising Network
Abstract:
Two-dimensional arrays of magnetically coupled nanomagnets provide a mesoscopic platform for exploring collective phenomena as well as realizing a broad range of spintronic devices. In particular, the magnetic coupling plays a critical role in determining the nature of the cooperative behaviour and providing new functionalities in nanomagnet-based devices. Here, we create coupled Ising-like nanomagnets in which the coupling between adjacent nanomagnetic regions can be reversibly converted between parallel and antiparallel through solid-state ionic gating. This is achieved with the voltage-control of magnetic anisotropies in a nanosized region where the symmetric exchange interaction favours parallel alignment and the antisymmetric exchange interaction, namely the Dzyaloshinskii-Moriya interaction, favours antiparallel alignment. Applying this concept to a two- dimensional lattice, we demonstrate a voltage-controlled phase transition in artificial spin ices. Furthermore, we achieve an addressable control of the individual couplings and realize an electrically programmable Ising network, which opens up new avenues to design nanomagnet-based logic devices and neuromorphic computers.
Biography:
Prof. LUO, assistant professor at the School of Physics, Peking University. He graduated from Tsinghua University with bachelor’s and doctorate degrees in 2012 and 2017 respectively. He then conducted postdoctoral research at ETH Zurich and PSI in 2017. After that, he joined the School of Physics at Peking University at the end of 2021. During this period, he visited Tohoku University in Japan as a visiting professor in 2023. Zhaochu’s research interest is magneto-electronics, which is a multidisciplinary research field of physics, materials and microelectronics. He has published papers in journals such as Nature, Science, Nature Physics, Science Advances, Nature Communications, Advanced Materials, etc.
For more details, kindly find the event poster, abstract and bio.
