Edge excitons in a 2D topological insulator in a magnetic field

被引：3
|
作者：
Entin, M. V. [1 ,2 ]
Magarill, L. I. [1 ,2 ]
Mahmoodian, M. M. [1 ,2 ]
机构：
[1] Russian Acad Sci, Inst Semicond Phys, Siberian Branch, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
来源：
JETP LETTERS | 2016年 / 103卷 / 05期
基金：
俄罗斯基础研究基金会;
关键词：
JETP Letter; Edge State; HgTe; Topological Insulator; Exciton State;
D O I：
10.1134/S0021364016050039
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Exciton edge states and the microwave edge exciton absorption of a 2D topological insulator subject to the in-plane magnetic field are studied. The magnetic field forms a narrow gap in electron edge states that allows the existence of edge exciton. The exciton binding energy is found to be much smaller than the energy of a 1D Coulomb state. Phototransitions exist on the exciton states with even numbers, while odd exciton states are dark.
引用
收藏
页码：328 / 333
页数：6
相关论文
共 50 条
  • [31] Edge absorption and pure spin current in a 2D topological insulator in the Volkov-Pankratov model
    Mahmoodian, M. M.
    Magarill, L. I.
    Entin, M. V.
    JOURNAL OF PHYSICS-CONDENSED MATTER, 2017, 29 (43)
  • [32] Comparison of transport of edge states in 2D hexagonal lattice metallic, semiconducting and topological insulator nanoribbons
    Tanvir Ahmed Masum
    Beig Rajibul Hasan
    Nishat Mahzabin Helaly
    Anowarul Azim
    Mahbub Alam
    Journal of Computational Electronics, 2021, 20 : 116 - 125
  • [33] Low field magnetoresistance in a 2D topological insulator based on wide HgTe quantum well
    Olshanetsky, E. B.
    Kvon, Z. D.
    Gusev, G. M.
    Mikhailov, N. N.
    Dvoretsky, S. A.
    JOURNAL OF PHYSICS-CONDENSED MATTER, 2016, 28 (34)
  • [34] Edge bands and vertical transport in topological insulator/magnetic insulator heterostructures
    Mal'shukov, A. G.
    PHYSICAL REVIEW B, 2014, 90 (04):
  • [35] Tunnelling between edge states of a 2D topological insulator and a Fermi liquid lead through a quantum dot
    Seng, C. Y.
    Ng, T. K.
    EPL, 2011, 96 (06)
  • [36] Metal-insulator transition of 2D electron gas in a random magnetic field
    Wang, XR
    Xie, XC
    Liu, DZ
    JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 1999, 34 : S143 - S147
  • [37] Thickness magnetic field phase diagram at the superconductor-insulator transition in 2D
    Markovic, N
    Christiansen, C
    Goldman, AM
    PHYSICAL REVIEW LETTERS, 1998, 81 (23) : 5217 - 5220
  • [38] Magnetic Second-Order Topological Insulator: An Experimentally Feasible 2D CrSiTe3
    Wang, Xiaotian
    Li, Xiao-Ping
    Li, Jianghua
    Xie, Chengwu
    Wang, Jianhua
    Yuan, Hongkuan
    Wang, Wenhong
    Cheng, Zhenxiang
    Yu, Zhi-Ming
    Zhang, Gang
    ADVANCED FUNCTIONAL MATERIALS, 2023, 33 (49)
  • [39] Time-reversal breaking and spin transport induced by magnetic impurities in a 2D topological insulator
    Derakhshan, V.
    Ketabi, S. A.
    Moghaddam, A. G.
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2016, 49 (35)
  • [40] First detection of excitons in a topological insulator
    不详
    MATERIALS TODAY, 2023, 63 : 4 - 5
12345