Research mission
Our lab works in the field of experimental condensed matter physics with the focus on spintronics. We design and fabricate magnetic heterostructures and nanodevices. Employing spectroscopic methods in the frequency range from DC to microwave to THz, we study spin dynamics and spin transport. Our goal is to better understand the interplay of spins, electrons, and lattice and to advance next-generation spintronic and quantum-information technologies.
Major research topics
Nonlinear spin dynamics:
Magnon processes in 0D-magnets
Interplay of nonlinearities and spin currents
Nonlinear magnetic neurons
Energy-efficient spintronics:
Thermal spin currents, spin-caloritronics
Magnon condensation and instabilities
Tunable spin currents, spin-orbitronics
Magnetic Tunnel Junction Nanodevices
Quantum magnonics:
Hybrid quantum systems
Quantum mechanics of magnons
Antiferromagnetic spintronics:
AFM magnon spectroscopy
Interfacial spin transport
Ultrahigh-frequency applications
Development of spintronics concepts:
Superfluid-like spin transport
Magnetic Josephson juntions
Inertial spin dynamics
Funding
We gratefully acknowledge the support by:
National Science Fundation
US Department of Energy, EFRC
NVidia Corporation
Marie Curie Alumni Association
Resources
* = from on-campus collaboration/shared facilies
** = from off-campus collaborations
Microwave spectroscopy:
- Broad-band (40 GHz) inductive ferromagnetic resonance
- Broad-band spin-torque ferromagnetic resonance
- High-sensitivity microwave emission spectroscopy
- Multiplexing spectroscopy
- Multiple high- and low-frequency electrical lines
- Compatible with 1.5-400 K and bipolar 14 Tesla
- Multiple dedicated measurement stations
- Angle-dependence options
- In-lab design of microwave waveguides and resonators
- Cavity-based ESR/FMR *
THz spectroscopy:
- Modulated and continuous wave, monochromatic, polarized, 0.05-2.7 THz
- CW and pulsed, sub-THz and THz, low-temperature high-field spectroscopy **
Magnetotransport and magnetometry:
- DC/AC transport measurements
- 1.5-400 K and bipolar 14 Tesla
- Multiple dedicated measurement stations
- VSM magnetometry *
Materials and nanodevice fabrication:
- Dedicated wet-bench, fume hood, optical microscope, dessicators, gases
- Cleanroom facilities for e-beam and optical lithography and FIB with: *
- Sputter, evaporator, and ALD deposition
- Etchers, ashers, UV/ozon strippers, furnaces, etc
- Structural characterization: SEM, XRD, AFM, etc
- TEM center, cross-section microscopy.
- On-campus MBE and PLD *
- Ion-milling * **
3D modelling, prototyping, packaging, and fabrication:
- Wire-bonder*
- Optical microscope and sample prepartion/testing station
- Dedicated high-end computer with AutoDesk, Eagle, SolidWorks
- 3D printer for PLA
- Fine-tip soldering sation
- Dedicated fine-mechanics station
- On-campus machine shop *
Numerical simulations:
- 3 computers with high-performance GPUs
- Micromagnetics with MuMux
- Multi-physics with COMSOL on a dedicated high-performance computer
- Numerics with Mathematica and Python