Multichannel propagation and scattering of phonons and photons in low-dimension nanostructures

Kosevich, Yuriy A.

doi:10.1070/pu2008v051n08abeh006597

Cited by 49 publications

(43 citation statements)

References 17 publications

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“…Here we implement large-scale molecular dynamics (MD) simulations of phonon wave packet propagation in 3D lattices that incorporate realistic lattice potentials, which properly account for the nonlinearities in the interatomic interactions. Our MD simulations of anomalous phonon reflection (interference antiresonances) of short-wavelength phonons from internal crystal plane with embedded defects in a 3D lattice confirm previous analytical results for anomalous reflection of long-wavelength phonons in a 3D crystal with planar distribution of resonance defects (with 2D planar resonance defect) [22,26] and of finite-wavelength phonons in 1D atomic chain with resonance defects [23,24]. In addition to the results on anomalous phonon scattering in harmonic lattices with resonance defects, we also show that the two-path interference antiresonances remain pronounced even when the interaction nonlinearity becomes fairly strong in a real 3D lattice.…”

Section: Introductionsupporting

confidence: 85%

Phonon Interference and Energy Transport in Nonlinear Lattices with Resonance Defects

et al. 2015

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We introduce and model a three-dimensional atomic-scale phononic metamaterial producing two-path interference phonon antiresonances to control the heat flux spectrum. We show that a crystal plane partially filled with defect-atom arrays causes a total phonon reflection at the frequencies determined by masses and interaction forces. Such patterned atomic planes can be considered as high-finesse atomic-scale interference phonon metamirrors. We emphasize the predominant role of the second phonon path and destructive interference in the origin of the total reflection in comparison with the Fano-resonance concept. The random defect distribution in the plane and the anharmonicity of interatomic bonds do not deteriorate the interference antiresonances. The width of the interference antiresonance dip can provide a measure of the coherence length of the phonon wave packet. All our conclusions

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Section: Introductionsupporting

confidence: 85%

Phonon Interference and Energy Transport in Nonlinear Lattices with Resonance Defects

et al. 2015

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“…Two-path phonon interference is generated by exploiting the phonon reflection on internal interfaces embedded with defect-atom arrays. The 2D planar defects force phonons to propagate through two paths: through unperturbed (matrix) and perturbed (defect) interatomic bonds [6,12]. The resulting phonon interference yields transmission antiresonance (zero-transmission dip) in the spectrum of short-wavelength phonons that can be controlled by the masses, force constants and 2D concentration of the defect atoms.…”

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confidence: 99%

“…The difference between the very strong phonon reflection on a 50%-filled defect array and the high phonon transmission across a uniform defect array can result in a counter-intuitive effect: an array of segregated impurity atoms can scatter more thermal phonons than an array with a uniform distribution of heavy isotopes. This anomalous phonon transmission phenomenon in molecular systems can find its acoustic conterpart in macroscopic structures [12,25,27]. In Ref.…”

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Phonon interference and thermal conductance reduction in atomic-scale metamaterials

et al. 2014

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We introduce and model a three-dimensional (3D) atomic-scale phononic metamaterial producing two-path phonon interference antiresonances to control the heat flux spectrum. We show that a crystal plane partially embedded with defect-atom arrays can completely reflect phonons at the frequency prescribed by masses and interaction forces. We emphasize the predominant role of the second phonon path and destructive interference in the origin of the total phonon reflection and thermal conductance reduction in comparison with the Fano-resonance concept. The random defect distribution in the plane and the anharmonicity of atom bonds do not deteriorate the antiresonance. The width of antiresonance dip can provide a measure of the coherence length of the phonon wave packet. All our conclusions are confirmed both by analytical studies of the equivalent quasi-1D lattice models and by numerical molecular dynamics (MD) simulations of realistic 3D lattices.Two-photon interference can result in a total cancellation of the photon output because of the coalescence of the two single photons, which was first observed by Hong et al. [1]. This interference effect occurs because two possible photon paths interfere destructively, which produces the famous "Hong-Ou-Mandel (HOM) dip" in the detection probability of the output photons. The HOM dip has since then been demonstrated in both the optical [2,3] and microwave[4] regime. In particular, two-photon destructive interference was recently demonstrated in a 3D optical metamaterial [5]. Similar destructive interference effect which results in a total reflection can be also realized in a phonon system. For the sound waves, the two-path phonon interference antiresonance was first described in Ref. [6], where the anomalous zero-transmission and total absorption of long-wavelength acoustic waves in a crystal with 2D (planar) defect were related with the destructive interf erence between the two possible phonon paths: through the nearest-neighbor bonds and through the non-nearest-neighbor bonds which couple directly crystal layers adjacent to the defect atomic plane.Constant endeavour has been devoted to the precisely control of heat conduction. Recent efforts concentrated on reducing the thermal conductivity κ via nanostructured materials with superlattices [7,8] and embedded nanoparticles [9][10][11]. Most works attributed the reduction of κ to the decreased phonon life time and thus the mean free path (MFP), which belong to the particle description of heat conduction. However, the role of destructive phonon interference in the reduction of κ is much less understood in the wave picture of thermal transport.In this Letter we introduce and model a realistic 3D atomic-scale phononic metamaterial that allows for manipulating the flow of thermal energy. Two-path phonon interference is generated by exploiting the phonon reflection on internal interfaces embedded with defect-atom arrays. The 2D planar defects force phonons to propagate through two paths: through unperturbed (matrix) and perturbed ...

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“…As an alternative, the phonon resonant e↵ect in metamaterials [21,22] has been recently proposed for TC design [23,24]. With a careful design of resonant structures, a set of resonant frequencies can be obtained, evidenced by a set of flat bands in the phonon dispersion.…”

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confidence: 99%

Blocking Phonon Transport by Structural Resonances in Alloy-Based Nanophononic Metamaterials Leads to Ultralow Thermal Conductivity

et al. 2016

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Multichannel propagation and scattering of phonons and photons in low-dimension nanostructures

Cited by 49 publications

References 17 publications

Phonon Interference and Energy Transport in Nonlinear Lattices with Resonance Defects

Phonon Interference and Energy Transport in Nonlinear Lattices with Resonance Defects

Phonon interference and thermal conductance reduction in atomic-scale metamaterials

Blocking Phonon Transport by Structural Resonances in Alloy-Based Nanophononic Metamaterials Leads to Ultralow Thermal Conductivity

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