Academic conferences | IEEE Magnetics Society Nanjing Miniworkshop on spintronics in quantum materials

Releasetime:2022-10-26 Visitor:

The IEEE Magnetics Society Nanjing Miniworkshop, jointly organized by IEEE Magnetics society Nanjing Chapter, the School of Physics of Nanjing University and the Department of Physics of Fudan University, was successfully held in Nanjing from October 14th to 18th, 2022.

Fig 1: Participants received supplies at the check-in site

The chairs of the mini-workshop were Professors Baigeng Wang and Haifeng Ding from School of Physics, Nanjing University, and Prof. Yizheng Wu from Department of Physics, Fudan University. The mini-workshop focused on spintronics in quantum materials and included eight invited presentations by experts from all over the world and forty-three oral presentations by students. More than 60 participants attend in the workshop.

Fig 2:Professors and students in the meeting room

Fig 3. Participants who attended the workshop online.

Prof. Baigeng Wang, Dean of School of Physics, Nanjing University, delivered a welcome speech at the opening ceremony. He pointed out that magnetism has a wide background of applications nowadays, where spintronics of topological magnetic structures, antiferromagnetic spin systems, and spin-orbit torque systems are more likely to lead the development of the next generation of technological advances. Prof. Wang also hoped that all participants would enjoy the conference by giving speeches and communicating with others.

Fig 4:Opening ceremony speech given by conference co-chair Prof. Baigeng Wang

In the invited presentation, Prof. Canming Hu from the University of Manitoba, Canada, started from a simple coupled double pendulum problem and leads to the phenomenon of level attraction caused by the coupling of magnetons and photons in a microwave resonant cavity step by step. Prof. Jiang Xiao of Fudan University, China gave a theoretical interpretation of antiferromagnetic resonance based on a model of dissipatively coupled oscillators. Prof. Bingfeng Miao from Nanjing University showed the source separation of rectified and thermal signals in different measurement configurations from the spin pumping effect and gave a more advantageous measurement configuration. Prof. Antonio Azevedo from the Federal University of Pernambuco, Brazil, discussed the interconversion of charge current, spin current and orbital current induced in a heterojunction. Prof. Yuan Zhe of Beijing Normal University, China illustrated the mechanism related to anisotropic magnetoresistance in symmetry-dependent topological electronic states in magnetic metals or alloys. Researcher Wei Han of Peking University, China showed quantum phenomena induced by the spin properties in the ferromagnetic-superconducting interface. Prof. Jing-Sheng Chen of National University of Singapore gave an overview of the ideas to generate spin-orbit torque by breaking specific symmetries of materials, thus achieving field-free magnetization flipping. Prof. Axel Hoffmann of the University of Illinois at Urbana-Champaign, USA described the potential of magnon hybridization with photons, phonons and the rest of magnons in the field of coherent information processing.

Fig. 5 Prof. Canming Hu, DL of IEEE Magnetics Society, 2018 is presenting the traveling wave induced coupling

Fig. 6 Prof. Jinsheng Cheng, DL of IEEE Magnetics Society, 2022 is presenting symmetry operations on different field vectors.

Fig. 7 Prof. Axel Hoffmann is presenting a magnon-photon hybrid system.

Fig. 8 Prof. Wei Han is showing quantum phenomena induced by the spin properties in the ferromagnetic-superconducting interface.

Fig. 9 Prof. Jiang Xiao is presenting two bipartite magnet model for ferromagnetic and antiferromagnetic resonance。

Fig. 10 Prof. Zhe Yuan is presenting the calculated AMR in alloy.

Fig 11:Prof. Bingfeng Miao is introducing the Spin Pumping effect.

Fig 12:Professor Antonio Azevedo is discussing the experimental progress of the Orbital Hall Effect.

In the student oral presentations, students from various universities and research institutes presented their research progress in the fields of skyrmions, field-free spin-orbit torque flip, antiferromagnetic spintronics, 2D magnetic material growth, spin current transport and magnon coupling, etc. Students communicated with each other actively after the presentations.

Fig 13:Students were enthusiastic in asking questions and exchanging ideas.

In the closing speech, Prof. Haifeng Ding, Chairman of IEEE Magnetics society, Nanjing Chapter and Executive Chairman of this conference, firstly thanked the self-confident face-to-face performance of the students who arrived at the site during the epidemic closure, and also affirmed the spirit of the online students who participated in the conference without affecting their current experimental progress. Prof. Ding mentioned that students are most likely to make a poster to attend the magnetic conference and have little chance to give a speech. However, this workshop gave more opportunities for Chinese students to participate in organizing a conference, chairing a session, making oral presentations and discussing with peer students in the conference. He also warmly encouraged students to apply for the IEEE Summer School to be held in Italy next summer. Ten awards for the outstanding presentations and two awards for the most active participants were selected by all participating students. Professor Ding congratulated them and thanked three volunteer students who were responsible for the organization of the workshop.

Fig 14:Conference co-chair Prof. Haifeng Ding delivered a speech at the closing ceremony.

Fig 15:Everyone expressed their gratitude to the three student volunteers for their support.