题目：Terahertz Electron Paramagnetic Resonance (EPR)

报告人：Jurek Krzystek

                 美国国家强磁场实验室

时间：2018年5月10日上午10:00

地点：国家脉冲强磁场科学中心B206

报告摘要：

The recent increase of interest in single-ion molecular magnets based on transition metal and lanthanides coordination complexes has necessitated developing techniques that reliably measure the parameter of importance for characterizing their properties, namely magnetic anisotropy, also known as zero-field splitting (zfs) for transition metals, or crystal-field splitting (cfs) for lanthanides and actinides. Whereas for many metal complexes High-Frequency and-Field EPR (HFEPR) has been fully adequate to determine zfs lying in the range of approximately 1-20 cm^-1，many of those that display single-ion magnet properties are characterized by so-called“giant anisotropy”,which means zfs or cfs exceeding, often significantly so, these numbers, sometimes reaching 100 cm^-1,and more. In such a case, increasing the EPR operating frequency into terahertz range is necessary. An overview of available and prospective techniques that enable it will be presented together with applications.

报告人简介：

Jurek Krzystek, Research Scientist at the National High Magnetic Field Laboratory (NHMFL) in Tallahassee, Florida, graduated from Warsaw University, Poland, with a B.Sc. and M.Sc. in chemistry. He pursued his graduate studies in chemical physics at the Institute of Physics, Polish Academy of Sciences, where he received a Ph.D. in 1983.There followed two postdoctoral appointments: at the University of Stuttgart in Germany and the University of Washington in the USA. Since 1995 Dr. Krzystek has been with the NHMFL. Ever since his Ph.D. days he has specialized in spectroscopy of molecular systems, and in particular, Electron Paramagnetic Resonance (EPR). Using the high magnetic fields generated by the NHMFL magnets, he has pursued the technique of High-Frequency and -Field EPR (HFEPR) as a characterization method for various electron spin systems, including but not limited to transition metal coordination complexes. Dr. Krzystek’s list of peer-reviewed publications currently stands at 150 items.

热忱欢迎广大老师，同学来聆听报告！