Research

Our lab works in the field of experimental condensed matter physics with a focus on spintronics. We design and probe magnetic nanoscale heterosructures and devices. Employing spectroscopic methods in the regimes of low frequecies, microwave and terahertz frequencies, we study spin dynamics and spin transport. One of our goals is to better understand the interplay of spins and lattice and to develop energy-efficient spintronics applications.

Research topics

- Thermally driven magnon condensates and magnon instabilities
- Fundamental and applicational aspects of nonlinear spin dynamics
- Generation of spin currents and transport of angular momentum
- Antiferromagnetic spintronics
- Magnetic materials and material properties
- Development of spintronics applications and device concepts

Funding

We gratefully acknowledge the support by:
- National Science Fundation, ECCS
- US Department of Energy, BES, EFRC 'SHINES'
- NVidia Corp.
- Marie Curie Alumni Association

Resources

Microwave spectroscopy:
- Inductive broad-band ferromagnetic resonance.
- Broad-band spin-torque ferromagnetic resonance.
- Microwave emission spectroscopy.
- On-campus X-band cavity-based spectrometer.

Magnetotransport and magnetometry:
- DC/AC transport measurements.
- PPMS (1.8 K, 12 T) at collaborating facility.
- VSM at collaborating facility.

Modules used with transport and spectroscopy:
- He cryostat (1.8-300 K).
- N2 cryostat.
- Electromagnets and bi-polar power supplies (400 mT and 3 T).

THz spectroscopy:
- modulated and continuous wave, monochromatic, polarized, 0.05-2.7 THz.

Materials and nanodevice fabrication:
- Nanofab wet bench and fume hood.
- On-campus sputtering chamber.
- MBE and PLD at collaborating facilities.
- On-campus cleanroom with e-beam and optical lithography.
- On-campus structural characterization: SEM, TEM, XRD.

Finite-element simulations:
- Micromagnetics on 3 high-performance computers with NVidia GPUs.
- Multi-physics with COMSOL packages (RF, heat transport, etc.) on a dedicated high-performance computer.

3D modelling, prototyping, and fabricaiton:
- Dedicated computer with AutoDesk, Eagle, SolidWorks.
- Two 3D printers for PLA.
- On-campus machine shop.