Effect of electronic correlation on the spin-transfer torque

• Antragsteller: Professor Dr. Jamal Berakdar
• Fachliche Zuordnung: Theoretische Physik der kondensierten Materie
• Förderung: Förderung von 2010 bis 2016
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 158783886

• Erstellungsjahr: 2016

Zusammenfassung der Projektergebnisse

Summarizing, the goals set out in the proposal were largely achieved. Most importantly the studies pointed out to new avenues for future research on non-collinear magnetic structures. A new fascinating field for continuing the current research would be to combine magnetic materials with nanostructured effective electric fields, such as those caused by ferroelectric islands. This may bring in a new aspect such as the coupling of the electric polarization associated with the magnetic non-collinearity to the polarization and hence to an external electric field. Initial investigations along these lines are promising but more analysis and tests are needed to ascertain the phenomena.

Projektbezogene Publikationen (Auswahl)

• Indirect interaction of magnetic domain walls. Phys. Status Solidi RRL 5, pp 450 (2011)
  Sedlmayr N., Dugaev V. K., and Berakdar J
  
• Magnetic dynamics driven by the spin-current generated via spin-Seebeck effect. Phys. Rev. B 83, pp 180401(R) (2011)
  Jia C.L., and Berakdar J
  
• Spin-density waves and domain wall interactions in nanowires. Phys. Rev. B 83, pp 174447 (2011)
  Sedlmayr N., Dugaev V. K., and Berakdar J
  
• Negative differential magnetoresistance in ferromagnetic wires with domain walls. Phys. Rev. B 86, pp 024409 (2012)
  Sedlmayr N., Berakdar J
  
• Nonlinear Anomalous Hall Effect and Negative Magnetoresistance in a System with Random Rashba Field. Phys. Rev. Lett. 109 , pp 206601 (2012)
  Dugaev V. K., Inglot M., Sherman E. Ya., Berakdar J., and Barnaś J
  
• Thermally activated in-plane magnetization rotation induced by spin torque. J. Appl. Phys. 114, pp 123906 (2013)
  Chotorlishvili L., Toklikishvili Z., Sukhov A., Horley P.P., Dugaev V.K., Vieira V.R., Trimper S., and Berakdar J.
  
• Chargeless spin current for switching and coupling of domain walls in magnetic nanowires. Physics Letters A 379, pp 367 (2015)
  Jia C. L., and Berakdar J.
  
• Spectral characteristics of time resolved magnonic spin Seebeck effect. Applied Physics Letters 107, pp 132402 (2015)
  Etesami S. R., Chotorlishvili L., and Berakdar J.
  
• Swift thermal steering of domain walls in ferromagnetic MnBi stripes. Sci. Rep. 6, pp 24411 (2016)
  Sukhov A., Chotorlishvili L., Ernst A., Zubizarreta X., Ostanin S., Mertig M., Gross E. K. U., and Berakdar J.
  
• Thermally induced magnonic spin current, thermomagnonic torques, and domain-wall dynamics in the presence of Dzyaloshinskii-Moriya interaction. Phys. Rev. B 94, pp 104410 (2016)
  Wang X.-G., Chotorlishvili L., Guo G.-H., Sukhov A., Dugaev V., Barnas J., and Berakdar J.