Magneto-gyrotropic effects in semiconductor quantum wells

Belkov, Vassilij; Ganichev, Sergey

doi:10.1088/0268-1242/23/11/114003

Cited by 90 publications

(35 citation statements)

References 46 publications

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“…The peak intensity in the laser spot on the sample, being of about 1.5 mm diameter [55,56], was I ≈ 8 W/cm 2 . The THz radiation polarization state was varied by rotation of crystal quartz λ/4 and λ/2 plates [57,58]. To obtain circular and elliptically polarized radiation, the quarter-wave plate was rotated by an angle ϕ between the initial polarization plane and the optical axis of the plate.…”

Section: Samples and Methodsmentioning

confidence: 99%

Terahertz ratchet effects in graphene with a lateral superlattice

et al. 2016

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Experimental and theoretical studies on ratchet effects in graphene with a lateral superlattice excited by alternating electric fields of terahertz frequency range are presented. A lateral superlattice deposited on top of monolayer graphene is formed either by periodically repeated metal stripes having different widths and spacings or by interdigitated comblike dual-grating-gate (DGG) structures. We show that the ratchet photocurrent excited by terahertz radiation and sensitive to the radiation polarization state can be efficiently controlled by the back gate driving the system through the Dirac point as well as by the lateral asymmetry varied by applying unequal voltages to the DGG subgratings. The ratchet photocurrent includes the Seebeck thermoratchet effect as well as the effects of "linear" and "circular" ratchets, sensitive to the corresponding polarization of the driving electromagnetic force. The experimental data are analyzed for the electronic and plasmonic ratchets taking into account the calculated potential profile and the near field acting on carriers in graphene. We show that the photocurrent generation is based on a combined action of a spatially periodic in-plane potential and the spatially modulated light due to the near-field effects of the light diffraction.

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Section: Samples and Methodsmentioning

confidence: 99%

Terahertz ratchet effects in graphene with a lateral superlattice

et al. 2016

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“…The interference of the two spin-orbit couplings leads to anisotropic spin splitting, which hence results in anisotropic spin precession [64][65][66][67], spin relaxation [194][195][196][197][198][199], spin diffusion [29,[32][33][34]37] and spin photocurrent [200][201][202]. Conversely, the ratio of β D /α R can be inferred from the anisotropy of spin precession [64,203], spin relaxation [198,199], spin diffusion [29,33] and spin photocurrent [200,201].…”

Section: Electron Spin-orbit Coupling In Nanostructuresmentioning

confidence: 99%

Spin dynamics in semiconductors

2010

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This article reviews the current status of spin dynamics in semiconductors which has achieved a lot of progress in the past years due to the fast growing field of semiconductor spintronics. The primary focus is the theoretical and experimental developments of spin relaxation and dephasing in both spin precession in time domain and spin diffusion and transport in spacial domain. A fully microscopic many-body investigation on spin dynamics based on the kinetic spin Bloch equation approach is reviewed comprehensively.Comment: a review article with 193 pages and 1103 references. To be published in Physics Reports

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“…(iii) Magneto‐gyrotropic effect. MPGE is the electric current excitation by normally incident radiation in the presence of an external magnetic field

boldB

. It may be caused by the spin or orbital mechanisms.…”

Section: Determination Of Sia and Bia Spin Splittings By Photogalvanimentioning

confidence: 99%

Interplay of Rashba/Dresselhaus spin splittings probed by photogalvanic spectroscopy –A review

Ganichev

Golub²

2014

Physica Status Solidi (b)

206

205

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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.The paper reviews the interplay of Rashba/Dresselhaus spin splittings in various two-dimensional systems made of zincblende III-V, wurtzite, and SiGe semiconductors. We discuss the symmetry aspects of the linear and cubic in electron wavevector spin splitting in heterostructures prepared on (001)-, (110)-, (111)-, (113)-, (112)-, and (013)-oriented substrates and address the requirements for suppression of spin relaxation and realization of the persistent spin helix state. In experimental part of the paper, we overview experimental results on the interplay of Rashba/Dresselhaus spin splittings probed by photogalvanic spectroscopy: The method based on the phenomenological equivalence of the linear-in-wavevector spin splitting and several photogalvanic phenomena.

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Magneto-gyrotropic effects in semiconductor quantum wells

Cited by 90 publications

References 46 publications

Terahertz ratchet effects in graphene with a lateral superlattice

Terahertz ratchet effects in graphene with a lateral superlattice

Spin dynamics in semiconductors

Interplay of Rashba/Dresselhaus spin splittings probed by photogalvanic spectroscopy –A review

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