Institute of Metal Physics, Russian Academy of Sciences
Sergey Streltsov graduated from Ural Federal University in 2003 and subsequently obtained his Ph.D. degree in 2005 and then his doctoral degree in condensed matter physics in 2015 at the Institute of Metal Physics, Ekaterinburg (Russia). In 2016 he was elected as a Professor and in 2019 as a Corresponding Member of the Russian Academy of Sciences. He is the head of the Theory of Low- dimensional Spin Systems laboratory at the Institute of Metal Physics. Professor Streltsov research interests encompass a range of topics in condensed matter physics, with an emphasis on theoretical study of the interplay among orbital, charge, spin, and lattice degrees of freedom and computational methods for application to solid-state physics. His research has resulted in over 150 journal publications.
The spin-orbit coupling has become one of the key notions of the condensed matter physics in last decade. While most of the emphasis has been made on various topological effects, many conventional physical phenomena in transition metal compounds have been reexamined. First of all, these are “magnetic” manifestations related to pronounced anisotropy of the exchange interaction due to strong spin-orbit coupling. The most prominent examples are so-called Kitaev materials – layered systems with honeycomb lattice based on typically Ru5+, Ir4+ or Co2+ ions . Second, it has been realized that there is an important class of compounds, where the metal-insulator transitions turn out to be related to the spin-orbit coupling (spin-orbit assisted Mott insulators). Third, the spin-orbit coupling can result in formation of highly non-trivial states, where not dipolar, but higher order multipoles order. Forth, even such “classical” effects as e.g. Jahn-Teller effect can be modified by the spin-orbit coupling. All these phenomena will be discussed in the present talk.
联系人：胡 颖（8264 9361）