Hybrid surface waves in two-dimensional Rashba-Dresselhaus materials

Yudin, Dmitry; Gulevich, Dmitry R.; Shelykh, I. A.

doi:10.1103/physrevb.95.035401

Cited by 6 publications

(3 citation statements)

References 42 publications

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“…It has been shown that the anisotropic dynamical optical conductivity can be used as a powerful tool to probe and manipulate the coupling strengths and set out the range of frequency where the optical conductivity is essentially non-zero. 32,37 In this paper, we use the k-linear Rashba Hamiltonian for anisotropic 2D materials, such as phosphorene and group-IV monochalcogenides which have been predicted to exhibit an anisotropic energy band. 9,11,38,39 We find that the extrinsic spin-orbit coupling due to broken inversion symmetry has a strong anisotropic nature which impacts the optical response of 2D electron systems.…”

Section: Introductionmentioning

confidence: 99%

Strong anisotropic optical conductivity in two-dimensional puckered structures: The role of the Rashba effect

et al. 2017

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We calculate the optical conductivity of an anisotropic two-dimensional system with Rashba spin-flip excitation within the Kubo formalism. We show that the anisotropic Rashba effect caused by an external field changes significantly the magnitude of the spin splitting. Furthermore, we obtain an analytical expression for the longitudinal optical conductivity associated with inter-band transitions as a function of the frequency for an arbitrary polarization angle. We find that the diagonal components of the optical conductivity tensor are direction-dependent and the spectrum of optical absorption is strongly anisotropic with an absorption window. The height and width of this absorption window are very sensitive to the system anisotropy. While the height of absorption peak increases with increasing effective mass anisotropy ratio, the peak intensity is larger when the light polarization is along the armchair direction. Moreover, the absorption peak width becomes broader as the density of state mass or Rashba interaction is enhanced. These features can be used to determine parameters relevant for spintronics through the optical absorption spectrum.

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Section: Introductionmentioning

confidence: 99%

Strong anisotropic optical conductivity in two-dimensional puckered structures: The role of the Rashba effect

et al. 2017

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“…The appearance and propagation of surface electromagnetic waves at the interface between two media has been extensively studied over last decades [30][31][32]. Initiated by the description of surface waves at the boundary between the metal and dielectric material, their presence has also been confirmed on specific semiconductor/dielectric interfaces, including a whole family of two-dimensional materials [33][34][35][36][37][38]. In this paper, In-plane (a) diagonal σ0(ω) and (b) off-diagonal σxy(ω) components of the conductivity tensor as obtained from the Kubo formula combined with the results of first principles calculations within GGA+U approximation [39].…”

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confidence: 99%

Localized surface electromagnetic waves in CrI$_3$-based magnetophotonic structures

Pervishko,

Yudin,

Gudelli

et al. 2019

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Resulting from strong magnetic anisotropy two-dimensional ferromagnetism was recently shown to be stabilized in chromium triiodide, CrI3, in the monolayer limit. While its properties remain largely unexplored, it provides a unique material-specific platform to unveil electromagnetic properties associated with coupling of modes. Indeed, trigonal symmetry in the presence of out-of-plane magnetization results in a non-trivial structure of the conductivity tensor, including the off-diagonal terms. In this paper, based on the results of ab initio calculations of the conductivity tensor, we study the surface electromagnetic waves localized in a CrI3-based structure. In particular, we provide an estimate for the critical angle corresponding to the surface plasmon polariton generation in the Kretschmann-Raether configuration by a detailed investigation of reflectance spectrum and magnetic field distribution for different CrI3 layer thicknesses. We also study the bilayer structure formed by two CrI3 layers separated by a SiO2 spacer and show that the surface plasmon resonance can be obtained at the outer interface of the proposed system depending on the spacer thickness.

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“…An external electromagnetic field may strongly modify the properties of an electronic system providing an important tool for manipulating materials in a controllable fashion [46][47][48]. It has been recently shown that the effect of off-resonant electromagnetic radiation (with the frequency exceeding the bandwidth of the system) may be described by effective time-independent models with strongly renormalized parameters [49][50][51][52][53][54][55][56][57][58].…”

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confidence: 99%

Light-Induced Anisotropic Skyrmion and Stripe Phases in a Rashba Ferromagnet

2017

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An external off-resonant pumping is proposed as a tool to control the Dzyaloshinskii-Moriya interaction (DMI) in ferromagnetic layers with strong spin-orbit coupling. Combining theoretical analysis with numerical simulations for an s-d-like model, we demonstrate that linearly polarized off-resonant light may help stabilize novel noncollinear magnetic phases by inducing a strong anisotropy of the DMI. We also investigate how with the application of electromagnetic pumping one can control the stability, shape, and size of individual Skyrmions to make them suitable for potential applications.

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Hybrid surface waves in two-dimensional Rashba-Dresselhaus materials

Cited by 6 publications

References 42 publications

Strong anisotropic optical conductivity in two-dimensional puckered structures: The role of the Rashba effect

Strong anisotropic optical conductivity in two-dimensional puckered structures: The role of the Rashba effect

Localized surface electromagnetic waves in CrI$_3$-based magnetophotonic structures

Light-Induced Anisotropic Skyrmion and Stripe Phases in a Rashba Ferromagnet

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