Effect of electronic correlation on the spin-transfer torque

• Applicant: Professor Dr. Jamal Berakdar
• Subject Area: Theoretical Condensed Matter Physics
• Term: from 2010 to 2016
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 158783886

• Final Report Year: 2016

Final Report Abstract

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.

Publications

• 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
  (See online at https://doi.org/10.1103/PhysRevB.86.024409)
• 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
  (See online at https://doi.org/10.1103/PhysRevLett.109.206601)
• 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.
  (See online at https://doi.org/10.1063/1.4822058)
• 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.
  (See online at https://doi.org/10.1016/j.physleta.2014.11.033)
• Spectral characteristics of time resolved magnonic spin Seebeck effect. Applied Physics Letters 107, pp 132402 (2015)
  Etesami S. R., Chotorlishvili L., and Berakdar J.
  (See online at https://doi.org/10.1063/1.4931701)
• 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.
  (See online at https://doi.org/10.1038/srep24411)
• 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.
  (See online at https://doi.org/10.1103/PhysRevB.94.104410)