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Conferences > CLEOPR > 2015 > 26C2 > 26C2_2
  • 2015 Conference on Lasers and Electro-Optics Pacific Rim
  • (Optica Publishing Group, 2015),
  • paper 26C2_2

Ultrafast mid-infrared investigations on the surface Dirac fermions with topological phase transition

Jun Park, Sangwan Sim, Nikesh Koirala, Matthew Brahlek, Seongshik Oh, and Hyunyong Choi

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Abstract

We present ultrafast optical studies of the Dirac surface dynamics in a topological insulator Bi2Se3 via optical pump mid-infrared probe spectroscopy. We observed largely enhanced carrier relaxation when the topological-phase transition takes place.

© 2015 IEEE

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