Literature DB >> 33452348

Non-local terahertz photoconductivity in the topological phase of Hg1-xCdxTe.

A S Kazakov1, A V Galeeva1, A I Artamkin1, A V Ikonnikov1, L I Ryabova2, S A Dvoretsky3, N N Mikhailov3, M I Bannikov4, S N Danilov5, D R Khokhlov6,7.   

Abstract

We report on observation of strong non-local photoconducitivity induced by terahertz laser pulses in non-zero magnetic field in heterostructures based on Hg1-xCdxTe films being in the topological phase. While the zero-field non-local photoconductivity is negligible, it is strongly enhanced in magnetic fields ~ 0.05 T resulting in appearance of an edge photocurrent that exceeds the respective dark signal by orders of magnitude. This photocurrent is chiral, and the chirality changes every time the magnetic field or the electric bias is reversed. Appearance of the non-local terahertz photoconductivity is attributed to features of the interface between the topological film and the trivial buffer.

Entities:  

Year:  2021        PMID： 33452348      PMCID： PMC7810835          DOI： 10.1038/s41598-021-81099-6

Source DB:  PubMed          Journal:  Sci Rep        ISSN： 2045-2322            Impact factor:   4.379


  11 in total

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Journal:  Phys Rev B Condens Matter       Date:  1992-02-15

2.  Terahertz response and colossal Kerr rotation from the surface states of the topological insulator Bi2Se3.

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Journal:  Nature       Date:  2009-07-20       Impact factor: 49.962

4.  Nonlocal transport in the quantum spin Hall state.

Authors:  Andreas Roth; Christoph Brüne; Hartmut Buhmann; Laurens W Molenkamp; Joseph Maciejko; Xiao-Liang Qi; Shou-Cheng Zhang
Journal:  Science       Date:  2009-07-17       Impact factor: 47.728

5.  Quantum Hall effect from the topological surface states of strained bulk HgTe.

Authors:  C Brüne; C X Liu; E G Novik; E M Hankiewicz; H Buhmann; Y L Chen; X L Qi; Z X Shen; S C Zhang; L W Molenkamp
Journal:  Phys Rev Lett       Date:  2011-03-22       Impact factor: 9.161

6.  Observation of edge transport in the disordered regime of topologically insulating InAs/GaSb quantum wells.

Authors:  Ivan Knez; Charles T Rettner; See-Hun Yang; Stuart S P Parkin; Lingjie Du; Rui-Rui Du; Gerard Sullivan
Journal:  Phys Rev Lett       Date:  2014-01-15       Impact factor: 9.161

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Authors:  D Hsieh; D Qian; L Wray; Y Xia; Y S Hor; R J Cava; M Z Hasan
Journal:  Nature       Date:  2008-04-24       Impact factor: 49.962

8.  Temperature-driven massless Kane fermions in HgCdTe crystals.

Authors:  F Teppe; M Marcinkiewicz; S S Krishtopenko; S Ruffenach; C Consejo; A M Kadykov; W Desrat; D But; W Knap; J Ludwig; S Moon; D Smirnov; M Orlita; Z Jiang; S V Morozov; V I Gavrilenko; N N Mikhailov; S A Dvoretskii
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9.  Non-equilibrium electron transport induced by terahertz radiation in the topological and trivial phases of Hg1-x Cd x Te.

Authors:  Alexandra V Galeeva; Alexey I Artamkin; Alexey S Kazakov; Sergey N Danilov; Sergey A Dvoretskiy; Nikolay N Mikhailov; Ludmila I Ryabova; Dmitry R Khokhlov
Journal:  Beilstein J Nanotechnol       Date:  2018-03-29       Impact factor: 3.649

10.  Apparent PT-symmetric terahertz photoconductivity in the topological phase of Hg1-xCdxTe-based structures.

Authors:  A V Galeeva; A S Kazakov; A I Artamkin; L I Ryabova; S A Dvoretsky; N N Mikhailov; M I Bannikov; S N Danilov; D R Khokhlov
Journal:  Sci Rep       Date:  2020-02-11       Impact factor: 4.379
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  1 in total

1.  Photoelectromagnetic Effect Induced by Terahertz Laser Radiation in Topological Crystalline Insulators Pb1-xSnxTe.

Authors:  Alexandra V Galeeva; Dmitry A Belov; Aleksei S Kazakov; Anton V Ikonnikov; Alexey I Artamkin; Ludmila I Ryabova; Valentine V Volobuev; Gunther Springholz; Sergey N Danilov; Dmitry R Khokhlov
Journal:  Nanomaterials (Basel)       Date:  2021-11-26       Impact factor: 5.076
  1 in total

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