Possible flat band bending of the Bi1.5Sb0.5Te1.7Se1.3 crystal cleaved in an ambient air probed by terahertz emission spectroscopy

被引：0
|
作者：
Soon Hee Park
Sun Young Hamh
Joonbum Park
Jun Sung Kim
Jong Seok Lee
机构：
[1] Gwangju Institute of Science and Technology,Department of Physics and Photon Science
[2] Pohang University of Science and Technology,Department of Physics
来源：
Scientific Reports | / 6卷
关键词：
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We investigate an evolution of the surface electronic state of the Bi1.5Sb0.5Te1.7Se1.3 single crystal, which is one of the most bulk insulating topological insulators, by examining terahertz light emitted from the sample surface upon the illumination of the near-infrared femtosecond laser pulses. We find that the surface state with a flat band bending can appear in the course of the natural maturation process of the surface state in an ambient air. Furthermore, we demonstrate that the evolution of the surface electronic state can be accelerated, decelerated, or even stopped by controlling environmental conditions to contain different amount of H2O, in particular.
引用
收藏
相关论文
共 20 条
  • [1] Possible flat band bending of the Bi1.5Sb0.5Te1.7Se1.3 crystal cleaved in an ambient air probed by terahertz emission spectroscopy
    Park, Soon Hee
    Hamh, Sun Young
    Park, Joonbum
    Kim, Jun Sung
    Lee, Jong Seok
    SCIENTIFIC REPORTS, 2016, 6
  • [2] Atomic and electronic structure of an alloyed topological insulator, Bi1.5Sb0.5Te1.7Se1.3
    Ko, Wonhee
    Jeon, Insu
    Kim, Hyo Won
    Kwon, Hyeokshin
    Kahng, Se-Jong
    Park, Joonbum
    Kim, Jun Sung
    Hwang, Sung Woo
    Suh, Hwansoo
    SCIENTIFIC REPORTS, 2013, 3
  • [3] Robust Protection from Backscattering in the Topological Insulator Bi1.5Sb0.5Te1.7Se1.3
    Kim, Sunghun
    Yoshizawa, Shunsuke
    Ishida, Yukiaki
    Eto, Kazuma
    Segawa, Kouji
    Ando, Yoichi
    Shin, Shik
    Komori, Fumio
    PHYSICAL REVIEW LETTERS, 2014, 112 (13)
  • [4] Atomic and electronic structure of an alloyed topological insulator, Bi1.5Sb0.5Te1.7Se1.3
    Wonhee Ko
    Insu Jeon
    Hyo Won Kim
    Hyeokshin Kwon
    Se-Jong Kahng
    Joonbum Park
    Jun Sung Kim
    Sung Woo Hwang
    Hwansoo Suh
    Scientific Reports, 3
  • [5] Enhanced surface mobility and quantum oscillations in topological insulator Bi1.5Sb0.5Te1.7Se1.3 nanoflakes
    Hsiung, Te-Chih
    Chen, Ding-Yuan
    Zhao, Li
    Lin, Yi-Hsin
    Mou, Chung-Yu
    Lee, Ting-Kuo
    Wu, Maw-Kuen
    Chen, Yang-Yuan
    APPLIED PHYSICS LETTERS, 2013, 103 (16)
  • [6] Ultrafast carrier relaxation through Auger recombination in the topological insulator Bi1.5Sb0.5Te1.7Se1.3
    Onishi, Yoshito
    Ren, Zhi
    Segawa, Kouji
    Kaszub, Wawrzyniec
    Lorenc, Maciej
    Ando, Yoichi
    Tanaka, Koichiro
    PHYSICAL REVIEW B, 2015, 91 (08)
  • [7] Local potential fluctuation of topological surface states in Bi1.5Sb0.5Te1.7Se1.3 observed by Landau level spectroscopy
    Ko, Wonhee
    Park, Joonbum
    Jeon, Insu
    Kim, Hyo Won
    Kwon, Hyeokshin
    Oh, Youngtek
    Kim, Jun Sung
    Suh, Hwansoo
    Hwang, Sung Woo
    Chung, Chilhee
    APPLIED PHYSICS LETTERS, 2016, 108 (08)
  • [8] Electrical detection of spin-polarized current in topological insulator Bi1.5Sb0.5Te1.7Se1.3
    Hwang, Tae-Ha
    Kim, Hong-Seok
    Kim, Hoil
    Kim, Jun Sung
    Doh, Yong-Joo
    CURRENT APPLIED PHYSICS, 2019, 19 (08) : 917 - 923
  • [9] Magneto-Transport Studies on Single Crystals of Bi1.5Sb0.5Te1.7Se1.3 Topological Insulator
    Abhirami, S.
    Sharma, Shilpam
    Amaladass, E. P.
    Mani, Awadhesh
    DAE SOLID STATE PHYSICS SYMPOSIUM 2018, 2019, 2115
  • [10] Proximity-induced spin-orbit coupling in graphene/Bi1.5Sb0.5Te1.7Se1.3 heterostructures
    Jafarpisheh, S.
    Cummings, A. W.
    Watanabe, K.
    Taniguchi, T.
    Beschoten, B.
    Stampfer, C.
    PHYSICAL REVIEW B, 2018, 98 (24)
12