High‐Frequency Nonlinear Transport and Photogalvanic Effects in 2D Topological Insulators

  title={High‐Frequency Nonlinear Transport and Photogalvanic Effects in 2D Topological Insulators},
  author={M V Durnev and Sergey A. Tarasenko},
  journal={Annalen der Physik},
Excitation of a topological insulator by a high‐frequency electric field of a laser radiation leads to a dc electric current in the helical edge channel whose direction and magnitude are sensitive to the radiation polarization and depend on the physical properties of the edge. An overview of theoretical and experimental studies of such edge photoelectric effects in 2D topological insulators based on semiconductor quantum wells is presented. First, a phenomenological description is given of edge… 
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Resonant Photovoltaic Effect in Doped Magnetic Semiconductors.
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Effects of Electron-Hole Asymmetry on Electronic Structure of Helical Edge States in HgTe/HgCdTe Quantum Wells
  • M. Durnev
  • Physics, Materials Science
    Physics of the Solid State
  • 2020
Abstract We study the effects of electron-hole asymmetry on the electronic structure of helical edge states in HgTe/HgCdTe quantum wells. In the framework of the four-band kp -model, which takes into
Symmetry breaking and circular photogalvanic effect in epitaxial CdxHg1−xTe films
We report on the observation of symmetry breaking and the circular photogalvanic effect in Cd$_x$Hg$_{1-x}$Te alloys. We demonstrate that irradiation of bulk epitaxial films with circularly polarized
Optical radiation induced chaotic dynamics of electrons in a uniform magnetic field.
Interestingly, it is found that chaotic effects are induced by radiation in the dynamics of electron wave packet in an applied uniform magnetic field and attributed to the nonlinear interaction between the optical radiation and internal cooperative oscillating mode produced by the interplay of relativistic and cyclotron oscillations.
Scattering of Wave Packets on the Surface of Topological Insulators in the Presence of Potential Barriers with Magnetization
Abstract The nonstationary Schrödinger equation is solved numerically by the Cayley method for wave packets that are formed from surface states on the surface of topological insulators and are
Nonlinear intensity dependence of terahertz edge photocurrents in graphene
S. Candussio, L. E. Golub, S. Bernreuter, T. Jötten, T. Rockinger, K. Watanabe, T. Taniguchi, J. Eroms, D. Weiss, and S.D. Ganichev Terahertz Center, University of Regensburg, 93040 Regensburg,
Advances in Physics of Semiconductors
This twin special issue, published in the June 2019 issues of An- nalen der Physik and physica status solidi (b), gathers a collection of articles corresponding to selected presentations from the 34


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We discuss optical absorption in topological insulators and study possible photoelectric effects theoretically. We found that absorption of circularly polarized electromagnetic waves in
Photogalvanic effects in topological insulators
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Manifestation of topological surface electron states in the photoelectromagnetic effect induced by terahertz laser radiation
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Photogalvanic effect in the HgTe/CdTe topological insulator due to edge-bulk optical transitions
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Photogalvanic probing of helical edge channels in 2D HgTe topological insulators
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Terahertz radiation driven chiral edge currents in graphene.
It is shown that the edge photocurrents can be applied for determination of the conductivity type and the momentum scattering time of the charge carriers in the graphene edge vicinity.
Optically engineering the topological properties of a spin Hall insulator.
Time-periodic perturbations can be used to engineer topological properties of matter by altering the Floquet band structure and the connection with Thouless' charge pumping and nonequilibrium zitterbewegung is discussed, together with possible experiments.
Transport in disordered two-dimensional topological insulators
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Nonlinear optical probe of tunable surface electrons on a topological insulator.
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Terahertz quantum Hall effect of Dirac fermions in a topological insulator
Using terahertz spectroscopy in external magnetic fields, we investigate the low-temperature charge dynamics of strained HgTe, a three-dimensional topological insulator. In resonator experiments, we