de | en

Experimental Physics of Functional Spin Systems

Prof. Christian Back

Research Field

The research of our group is focused on the detailed understanding of magnetization dynamics in hybrid materials comprising of ultrathin magnetic layers in combination with topological materials or with materials inducing strong interfacial spin-orbit interaction. We tailor novel hybrid magnetic structures and investigate their static and dynamic magnetic properties. Among the subjects covered in our research are the dynamics in confined magnetic systems, magnonics, spin orbitronics, hybrid topological materials, high resolution magnetic microscopy as well as magnetic phase transitions in low dimensional systems.

In our group we use several techniques to examine magnetization dynamics, the propagation of spinwaves and the efficiency of charge to spin current conversion. At the heart of our research projects are various time and spatially resolved high resolution magnetic microscopy techniques in combination with microwave excitation and detection.

Address/Contact

James-Franck-Str. 1
85748 Garching b. München
christian.back@tum.de
+49 89 289 12401
Fax: +49 89 289 12414

Members of the Research Group

Professor

Scientists

Students

Other Staff

Teaching

Course with Participations of Group Members

Offers for Theses in the Group

Development of a polar magneto-optic Kerr microscope for the investigation of current induced domain wall motion

We plan to convert an existing polarization conserving microscope into a polar Kerr microscope for the investigation of current induced domain wall motion. The thesis will comprise of the development of the experimental set-up, the development of measurement software and first test experiments.

suitable as
  • Bachelor’s Thesis Physics
Supervisor: Christian Back
Spinpumping in heterostructures consisting of magnetic Weyl Semi-metals and heavy metals

Magnetic Weyl semi-metals combine magnetic order and a topological electronic band structure. It is expected that mutual spin-to-charge conversion is particularly efficient in these materials. We will study mutual spin-to-charge conversion using methods of ferromagnetic resonance.

suitable as
  • Bachelor’s Thesis Physics
Supervisor: Christian Back
Spin wave propagation in spin Hall nano-oscillators

Nanoconstrictions in ferromagnet/heavy metal bi-layers can be used to generate auto-oscillations of the dynamic magnetization via the dc spin Hall effect. We use time resolved magneto-optic Kerr microscopy with 250 nm spatial and sub-picosecond temporal resolution to study the excitation of localized auto-oscillations. Here, we would like to study coupling of localized dynamic modes to propagating modes in the ferromagnetic leads.

suitable as
  • Bachelor’s Thesis Physics
Supervisor: Christian Back

Current and Finished Theses in the Group

Voltage-controlled magnetic anisotropy (VCMA) for high-speed and low-power memory application
Abschlussarbeit im Masterstudiengang Physics (Applied and Engineering Physics)
Themensteller(in): Christian Back
Top of page