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Dr Pierre Roy


Telephone : +44.1223.44.29.10 (Direct)

                  +44.1223.44.29.00 (Secretary)

Email: per24 (add domain name : "cam.ac.uk")



Research Interests

  • Spintronics

During my PhD I was working on magnetic properties in patterned soft magnetic structures, in particular magnetization dynamics at microwave frequencies in circular cylindrical and elliptic cylindrical dots but also static and quasi-static behaviors. During my post-docs I continued along similar lines of research mainly on stripe and ring geometries. I joined the Hitachi Cambridge Laboratory as a research scientist in April 2010.



Recent Research projects

  • Current-induced domain wall motion (via spin-transfer-torque) in GaMnAs bar structures and ways to control it by manipulation of the magnetocrystalline anisotropy. This is controlled by stress-induced strains using piezo-electric actuators. Techniques used include Magneto-Optical Kerr Microscopy (to image the domain walls), various magnetotransport measurements (for the extraction of pertinent material parameters) and micromagnetic modeling (for gaining deeper insight into the phenomena)

  • Domain wall resonance in stripe geometries including spin wave generation and manipulation

  • Spin-Transfer-Torque in magnetic multilayers



Last Publications