Speaker
Description
A skyrmion is a topologically protected particle-like magnetic spin structures on the order of 10-100 nm. Recent studies have also shown that the skyrmions can be manipulated through applications such as an external electric fields and heat. This offers the potential for development for a much more stable, energy efficient and faster storage in memory devices. The magnetic skyrmions pack into a hexagonal lattice with the skyrmion lattice only stable in a narrow magnetic field-temperature range.$^1$$^-$$^2$ Here we present structural analysis of Cu$_2$OSeO$_3$ and Te-doped Cu$_2$OSeO$_3$ using neutron and x-ray diffraction. A magnetic field-temperature phase diagram mapping of both Cu$_2$OSeO$_3$ and Te-doped Cu$_2$OSeO$_3$ was also achieved using small angle neutron scattering. Mapping of the magnetic field-temperature phase diagram showed that tellurium doping resulted in an enlarged stability range for the skyrmion phase had been achieved.$^3$
- Seki, S.; Kim, J.-H.; Inosov, D.; Georgii, R.; Keimer, B.; Ishiwata, S.; Tokura, Y., Formation and rotation of skyrmion crystal in the chiral-lattice insulator Cu$_2$OSeO$_3$. Physical Review B 2012, 85 (22), 220406.
- Fert, A.; Reyren, N.; Cros, V., Magnetic skyrmions: advances in physics and potential applications. Nature Reviews Materials 2017, 2, 17031.
- R. Rov; The Effect of Tellurium Doping on the Skyrmion Hosting Multiferroic Material Cu$_2$OSeO$_3$. Masters Thesis, University of Auckland 2019
| Level of Expertise | Student |
|---|---|
| Do you wish to take part in the poster slam | Yes |
