THz-emission probe of surface-electronic transitions in a topological insulator
Abstract
Upon femtosecond laser pumping of a topological insulator Bi2Se3, we observed efficient THz generation from the surface electrons. By performing polarization-resolved studies on the emitted THz spectrum, two emission mechanisms are identified. THz emission spectroscopy provides a valuable spectroscopic tool for studies of the dynamics of the surface electrons in centrosymmetric topological insulators. © 2013 IEEE.
Date Published
Conference Name
2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
URL
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893410297&doi=10.1109%2fIRMMW-THz.2013.6665533&partnerID=40&md5=d7e6558803f8e33cdbb1dd9459d370b0
DOI
10.1109/IRMMW-THz.2013.6665533
Research Area
Group (Lab)
Jie Shan Group
Kin Fai Mak Group