Magnetism Group

University of Exeter

The Magnetism group in the School of Physics has two main areas of research, both of which are of central importance to the proposed programme.  Firstly, the group uses ultrafast optical techniques to study high frequency and fast transient magnetic processes, such as precessional switching, ultrafast demagnetisation and conduction electron spin relaxation. A second area of research is concerned with the fabrication and characterisation of magnetic tunnel junctions.  Latterly the focus of this research has shifted towards three terminal double barrier devices.  More recently the group has begun to fabricate and characterise magnetic nano-arrays to assess their suitability as high-density data storage media.  There is additional relevant expertise in nano-optics and surface plasmon physics within the School, and we have access to a Magnetic Force Microscope in the Department of Engineering.

Role in the network

• Ultrafast magnetic imaging with sub-μm spatial resolution: magnetic resonance and switching.
• Development of high bandwidth coplanar waveguide structures for use in stroboscopic optical and X-ray measurements, and detection of microwave emission.
• Measurements of optically induced spin dynamics: ultrafast demagnetisation and optical spin-injection.
• Preparation of multiple barrier magnetic tunnel junctions.
• Optical characterization of barrier based spin-injection devices.

Personnel

Prof R. J. Hicken

Dr A. Neudert