Speaker: Wang Gang, (Institute of Physics CAS)

Time: 10:00, April 17, 2019

Venue: Room 205, Building 14, Wushan Campus

Abstract: Single crystals not only allow for access to the intrinsic properties of materials to a much higher extent compared to polycrystals and directly reflect the anisotropy of these properties, but also have found increasing applications in modern technology in recent decades. Here I will demonstrate the advantages of high-quality single crystal using three examples. One is the silicon carbide single crystal growth started from scratch and the novel properties of silicon carbide unraveled based on the high-quality crystal. The second is the discovery of high-temperature superconducting family AxFe2Se2 (A = K, Li, Na, Ca, Sr, Ba, Eu, and Yb). The final one is the ultrabroadband photoresponse of Weyl semimetal TaAs at room temperature.