题目：When high magnetic fields meet optical spectroscopy: probing electronic structure and interaction effects in novel electronic and magnetic materials

报告人：Dmitry Smirnov

               National High Magnetic Field Laboratory, Tallahassee, FL

时间：2018年9月3日上午10:00

地点：国家脉冲强磁场科学中心B206

报告摘要：

A magnetic field is one of the few fundamental thermodynamic parameters (alongside with temperature or pressure, for example) widely used in experimental condensed matter physics to probe or induce new states of matter. The magnetic field can be applied in situ in a highly controllable manner, reversibly and with perfect tunability. It lifts degeneracy of electronic orbital and spin states, breaks time reversal symmetry, introduces energy and length scales of quantum states that may result in establishing new field-induced order and quantum effects.

A review of recent experimental results obtained at the US National High Magnetic Filed Lab is given to demonstrate the aptitude of high-field magneto-spectroscopy methods in studying novel electronic and magnetic materials. Illustrative examples from the portfolio of our research will include: (i) Probing and controlling excitons in monolayer transition metal dichalcogenides (MoSe₂, WSe₂) with high magnetic fields, (ii) infrared magneto-spectroscopy of Dirac (ZrTe₅) and Weyl (NbP) semimetals, (iii) magneto-Raman probe of magneto-elastic coupling in a quasi-2D, frustrated quantum antiferromagnet SrCu₂(BO₃)₂.

报告人简介：

Dmitry Smirnov is a senior research faculty in the experimental condensed matter science group at the National High Magnetic Field Laboratory operated by Florida State University in Tallahassee, FL. He received his Ph.D. in Physics & Mathematics in 1996 from Ioffe Institute in St. Petersburg, Russia. Before joining the US National Magnet Lab in 2003, he was a post-doctoral associate and a CNRS research fellow at the French National High Magnetic Field Laboratory in Toulouse, France. Dr. Smirnov's research belong to a broadly defined field of experimental condensed matter physics with a focus on high-field optical magneto-spectroscopy probes.

热忱欢迎广大老师，同学来聆听讲座！