High-field Far-Infrared Spectroscopy of Magnetic Materials

Hard Condensed Matter & AMO Seminar

Abstract

Many magnetic materials exhibit resonance phenomena in the far infrared frequency range, between 10- 100 cm-1 (or 0.3-3 THz). The experimental studies of these ecitations allows the determination of basic magnetic parameters, like exchange constants, magnetic anisotropy, g-factors, etc. The application of the magnetic field significantly enhances such characterization by analyzing the two-dimensional map of resonance frequencies vs magnetic field. Here I am going to show several examples of the studies:

-         Zero-field splitting in single ion magnets.

-         Magnetic structure of skyrmion material Cu2OSeO3.

-         Antiferromagnetic resonance in multi- sublattices antiferromagnet Ca2Fe2O5.

Also, I will report on the status and recent developments of high-field infrared magneto-spectroscopy instrumentation at the National High Magnetic Field Laboratory.

 

 

Event Details

Date/Time:

  • Date: 
    Thursday, April 12, 2018 - 3:00pm to 4:00pm

Location:
Howey - School of Physics N110

For More Information Contact

Prof. Zhigang Jiang