Johansson Research Group

We use femtosecond laser pulses to study and control magnetic materials, which are the basic components in data storage devices.  Magnetic materials have revolutionised the advancement of consumer electronics during the twentieth century and have completely changed how we can access and make use of information. A continued development of new magnetic materials and new ways of controlling them will contribute to the development of future information storage devices. This is important because improving how we handle and process the large amount of data generated in our society will affect a wide range of areas such as health care, government, logistics, and will reduce global energy consumption.

Vibrating molecules

Research Keywords

  • Molecular magnetism
  • Femtosecond lasers
  • Spectroscopy and dynamics
  • Magnetic circular dichroism (MCD)
  • Thin films
  • Nanomaterials
  • Spectroelectrochemistry
  • Chemical physics

Upcoming Events

Faraday joint interest group conference 2021

Organised by the Royal Society of Chemistry and their Faraday Division, this meeting will host some of the leading physical chemistry researchers from the UK. It promises to be a great forum for researchers to network with and build strong collaborations within their community and related disciplines.

This meeting will take place online 29 - 31 March 2021.

2021 GRC on Photochemistry

The 2021 Gordon Research Conference on Photochemistry will take place in Lewiston, Maine, USA on 1 - 6 August 2021.

UMC 2021

The 5th Ultrafast Magnetism Conference is scheduled to take place in Nancy, France on 20 - 24 September 2021.

From optical to THz control of materials Faraday Discussion

Faraday discussion on ultrafast control of the physical properties of materials by light excitation and/or THz excitation. Given the rapid development of experimental techniques, including XFEL science, THz science and various pump–probe techniques, and developments in the theory of ultrafast, out-of-equilibrium and multiscale processes driven by light or THz excitation, this meeting will provide a roadmap of where the field is and what the challenges are over the next 5–10 years and beyond.

The meeting will take place in London on 23 - 25 May 2022.



Review article published in PCCP

Our review on the ultrafast photoinduced dynamics in Prussian blue analogues (PBAs) has been published in Physical Chemistry Chemical Physics. We discuss the main processes observed in PBAs after photoexcitation on both femtosecond and nanosecond timescales and techniques used.

Victory for Quizical Chemistry!

Kyle, Jake and Hal joined forces with Elliott of the Campbell group to partake in Chemunity's Battle of the Centuries Quiz, taking first place!

New EPSRC Grant Awarded

We have been awarded an EPSRC grant titled ‘Femtosecond Coherences in Single-Molecule Magnets’ in collaboration with Euan Brechin (Edinburgh) and Tom Penfold at Newcastle University. The team will explore new ways to manipulate paramagnetic coordination compounds by creating femtosecond coherent vibrational wavepackets along the Jahn-Teller (JT) axis to enable optical control of the magnetic anisotropy. The project builds on our proof-of-principle results published earlier this year (Liedy et al, Nature Chemistry, 12, 452 - 458 (2020)) and involves synthesis of new molecules, advanced measurements and quantum chemical calculations. State-of-the-art spectroscopic methods, such as ultrafast electron diffraction and X-ray free-electron lasers, will be used in collaboration with external project partners in Japan, Switzerland and Germany. We will soon advertise for a 3-year postdoc position with the group.

Back in the lab

The School of Chemistry is gradually opening and we are back in the lab!

Viva celebrations on Zoom

Florian passed his viva

Florian passed his viva and did a great job! It was done over Zoom and we had to have the celebrations online as well. We wish Florian all the best for his new job with Seagate!