Ultrafast semiconducting to metallic terahertz responses in the topological insulator Bi2Se3

Seungmin Lee, Sangwan Sim, Jisoo Moon, Soonyoung Cha, Ho Seung Shin, Soohyun Park, Woosun Jang, Myungwoo Son, Hyunseung Jung, Seung Young Seo, Aloysius Soon, Moon Ho Ham, Hojin Lee, Moon Ho Jo, Seongshik Oh, Hyunyong Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We present the photoinduced terahertz responses of topological insulators Bi2Se3. The photoconductance sign is determined by the competition between the topological surface state and the bulk response in n-type, p-type and bulk-insulating Bi2Se3.

Original languageEnglish
Title of host publicationCLEO
Subtitle of host publicationQELS_Fundamental Science, CLEO_QELS 2018
PublisherOptica Publishing Group (formerly OSA)
ISBN (Print)9781943580422
Publication statusPublished - 2018
EventCLEO: QELS_Fundamental Science, CLEO_QELS 2018 - San Jose, United States
Duration: 2018 May 132018 May 18

Publication series

NameOptics InfoBase Conference Papers
VolumePart F93-CLEO_QELS 2018
ISSN (Electronic)2162-2701


OtherCLEO: QELS_Fundamental Science, CLEO_QELS 2018
Country/TerritoryUnited States
CitySan Jose

Bibliographical note

Publisher Copyright:
© OSA 2018.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials


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