Department of Applied Physics

Nanomagnetism and Spintronics (NanoSpin)

Our research focuses on experimental studies of magnetic, magneto-optical, and spin-transport phenomena in new functional materials and hybrid nanoscale structures.
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We work on nanoscale phenomena and materials for future memory and unconventional computing technologies. We are interested in approaches that can be disruptive to the field. We study new control mechanisms of magnetism involving low-power voltages and ultrafast laser pulses. We work on low-loss hybrid magnonics, coupling of magnons to phonons, photons, and plasmons, reconfigurable magnonic neural networks, active control of magnetic skyrmions, and emerging phenomena in artificial spin ice. For smart in-sensor computing, we develop multisensory interconnected networks that can process multimodal information using photomemristor networks with build-in memory.

We are a multidisciplinary and experimental research group. Our laboratory houses dedicated equipment for material growth, lithography, and structural, magnetic, and electronic transport characterization. We operate pulsed laser deposition and magnetron sputtering systems for high-quality film growth, use super-Nyquist sampling magneto-optical Kerr effect microscopy and broadband spin-wave spectroscopy for spin-wave characterization, measure magnetoplasmonic properties using a femtosecond-laser setup and magneto-optical spectrometry, and analyze magnetic properties by various microscopy and magnetometry techniques.

Prof. Sebastiaan van Dijken

Group leader

Professor Sebastiaan van Dijken

Magnonics1

Magnonics

We study spin waves in YIG-based magnonic structures and work on wave-based neural networks.

Department of Applied Physics
E-field1

Voltage Control of Magnetism

We control magnetism by voltage using strain transfer in multiferroic structures and ion migration in metal/oxide bilayers.

Department of Applied Physics
Skyrmions1

Magnetic Skyrmions

We investigate the formation, annihilation, switching, and motion of magnetic skyrmions and skyrmion lattices.

Department of Applied Physics
Magnetoplasmonics

Magnetoplasmonics

We use plasmonics to tailor magneto-optical responses, study nanolasing, and control all-optical magnetic switching.

Department of Applied Physics
Spin-ice1

Artificial Spin Ice

Utilizing frustration by design, we explore the real-time dynamics of magnetic excitations in artificial spin ice and spin glass systems.

Department of Applied Physics
Multisensory Interconnected Network

Multisensory Interconnected Networks

We explore materials and concepts for neuromorphic computing and smart sensing technology.

Department of Applied Physics

Latest publications

Dynamic electromagnonic crystals based on ferrite-ferroelectric thin film multilayers

Aleksei A. Nikitin, Nikolai Kuznetsov, Sebastiaan Van Dijken, Erkki Lähderanta 2024 Physical Review B

Apparent ferrimagnetism in Sr(Fe0.2Mn0.2Co0.2Ti0.2V0.2)O3 high-entropy oxide perovskite thin films

Balaram Regmi, Duncan Miertschin, Maria Cocconcelli, Federico Stramaglia, Davis Crater, Lide Yao, Cinthia Piamonteze, Sebastiaan van Dijken, Alan Farhan 2024 AIP Advances

A Discolorable Flexible Synaptic Transistor for Wearable Health Monitoring

Cui Sun, Xuerong Liu, Quanxing Yao, Qian Jiang, Xiangling Xia, Youfeng Shen, Xiaoyu Ye, Hongwei Tan, Runsheng Gao, Xiaojian Zhu, Run Wei Li 2024 ACS Nano

Electric field control of RKKY coupling through solid-state ionics

Maria Ameziane, Roy Rosenkamp, Lukáš Flajšman, Sebastiaan van Dijken, Rhodri Mansell 2023 Applied Physics Letters

Solid-State Lithium Ion Supercapacitor for Voltage Control of Skyrmions

Maria Ameziane, Joonatan Huhtasalo, Lukáš Flajšman, Rhodri Mansell, Sebastiaan van Dijken 2023 Nano Letters

Perpendicular magnetic anisotropy in Bi-substituted yttrium iron garnet films

Sreeveni Das, Rhodri Mansell, Lukáš Flajšman, Lide Yao, Sebastiaan van Dijken 2023 Journal of Applied Physics

Element-sensitive x-ray absorption spectroscopy and magnetometry of Lu(Fe0.2Mn0.2Co0.2Cr0.2Ni0.2) O3 high-entropy oxide perovskite thin films

Alan Farhan, Maria Cocconcelli, Federico Stramaglia, Nikolai Kuznetsov, Lukáš Flajšman, Marcus Wyss, Lide Yao, Cinthia Piamonteze, Sebastiaan Van Dijken 2023 Physical Review Materials

Confined spin-wave characteristics in magnetic nanowire ensembles approaching the ultrathin regime

Abhijit Ghosh, Abhishek Talapatra, Sarjoosing Goolaup, Sze Ter Lim 2023 Physical Review Applied
More information on our research in the Aalto research portal.
Research portal
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