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Terahertz dynamics of topological insulator Bi2Se3 : ultrafast photoexcitation suppresses hot-Dirac electron surface scattering
- Authors
- Sim, Sangwan; Brahlek, Matthew; Koirala, Nikesh; Cha, Soonyoung; Oh, Seongshik; Choi, Hyunyong
- Issue Date
- Jun-2014
- Publisher
- IEEE
- Citation
- 2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), pp.1 - 2
- Indexed
- SCIE
SCOPUS
- Journal Title
- 2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
- Start Page
- 1
- End Page
- 2
- ISSN
- 2160-8989
- Abstract
- We present ultrafast terahertz scattering dynamics in topological insulator Bi2Se3 thin films. Upon photoexcitation, the surface-scattering rate is increased, resulting in decrease of conductance. At high temperature, however, the photo-generated electrons suppress the surface-scattering.
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Related Researcher
- Sim, Sang wan
- ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)