Complex conductivity-dependent two-dimensional atom microscopy

Ali, Khurshaid; Ullah, Maghfir; Bacha, Bakht Amin; Jabar, M S Abdul

doi:10.1140/epjp/i2019-12978-1

Cited by 16 publications

(11 citation statements)

References 35 publications

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“…Here ε b is the polarization response from the core electrons (background permittivity), ω p is the plasma frequency, γ p is the Drude relaxation rate. The dielectric function of metallic medium in the complex conductivity and frequency domain is written as [19]:…”

Section: Methodsmentioning

confidence: 99%

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The Study of the Surface Plasmon Polaritons at the Interface Separating Nanocomposite and Hypercrystal

2021

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Surface plasmon polaritons (SPPs) propagating at the interfaces of composite media possess a number of fascinating properties not emerging in case of conventional SPPs, i.e., at metal-dielectric boundaries. We propose here a helpful algorithm giving rise for investigation of basic features of complex conductivity dependent SPPs at the interface separating nanocomposite and hypercrystal. The main goal of the work is to investigate dispersion of the SPPs propagating at the boundary separating two different media. Aiming to achieve the aforementioned goal that the effective Maxwell Garnett model is used. It is demonstrated that the SPPs dispersive properties are dramatically affected by the material conductivity. Correspondingly, the filling ratio of the nanoparticles in the composite and their dielectric properties also allow one to engineer characteristics of the SPPs. Having a deep insight into the conductivity dependent functions, we concluded, on their behavior for the case of hyperbolic regime and Dyakonov surface waves case. Our model gives rise for studying features of surface waves in the complex conductivity plane and provides more options to tune the fundamental features of SPPs at the boundaries correlated with composite media.

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Section: Methodsmentioning

confidence: 99%

“…Based on the effective medium approximation one may calculate the effective permittivities of the anisotropic nanowire metamaterial (hypercrystal) according to [21]: The dielectric function of metallic medium in the complex conductivity and frequency domain is written as [19]:…”

Section: Methodsmentioning

confidence: 99%

The Study of the Surface Plasmon Polaritons at the Interface Separating Nanocomposite and Hypercrystal

2021

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“…The dielectric function of the metal without complex conductivity is written as ε r ¼ 1 þ χ. The dielectric function of metallic medium in the presence of complex conductivity is written as [50]:…”

Section: Atomic System and Derivation Of Susceptibilitymentioning

confidence: 99%

Complex conductivity dependent surface plasmon polaritons at the interface of metal and silver silica nanocomposites

Ullah

Bacha

Wahid

et al. 2021

Int J of Quantum Chemistry

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Surface plasmon polariton (SPPs) is investigated with complex conductivity at the interface of metal and silver silica nonacomposites. The amplitude and phase of complex conductivity significantly influence the SPPs propagation. The value of Re(k sp ) varies with the phase and norm of complex conductivity. Similarly the wavelength, propagation length, group velocity, decay time, penetration depth and rotary Plasmon drag of SPPs are investigated. These results may have vital applications in the field of wave-guides, Plasmonster, data storage, chemical and biosensors.

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“…The interaction Hamiltonian for the system is written as: The detunings of these fields are related to their corresponding angular frequencies and atomic states' resonance frequencies as: Δ 1 =ω 1 −ω 14 , Δ 2 =ω 2 −ω 23 Δ p =ω p −ω 45,35 and Δ m =ω m −ω 15,25 . The master equation for the density matrix is given by [57,69]…”

Section: Model Of the Atomic Systemmentioning

confidence: 99%

“…Recently, different schemes have been used for onedimensional (1D) atom localization in subwavelength space through excited level population measurements [48][49][50][51][52], and probe field absorption spectra [53][54][55][56][57]. In such cases, the standing wave fields are applied along a single direction (i.e, x-axis) and the atom is localized in the 1D subwavelength space.…”

Section: Introductionmentioning

confidence: 99%

Efficient two-dimensional atom localization in a five-level conductive chiral atomic medium via birefringence beam absorption spectrum

Ali¹,

Idrees²,

Bacha³

et al. 2020

Commun. Theor. Phys.

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We have theoretically investigated two-dimensional atom localization using the absorption spectra of birefringence beams of light in a single wavelength domain. The atom localization is controlled and modified through tunneling effect in a conductive chiral atomic medium with absorption spectra of birefringent beams. The significant localization peaks are investigated in the left and right circularly polarized beam. Single and double localized peaks are observed in different quadrants with minimum uncertainty and significant probability. The localized probability is modified by controlling birefringence and tunneling conditions. These results may be useful for the capability of optical microscopy and atom imaging.

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Complex conductivity-dependent two-dimensional atom microscopy

Cited by 16 publications

References 35 publications

The Study of the Surface Plasmon Polaritons at the Interface Separating Nanocomposite and Hypercrystal

The Study of the Surface Plasmon Polaritons at the Interface Separating Nanocomposite and Hypercrystal

Complex conductivity dependent surface plasmon polaritons at the interface of metal and silver silica nanocomposites

Efficient two-dimensional atom localization in a five-level conductive chiral atomic medium via birefringence beam absorption spectrum

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