Dynamics of coherence, localization and excitation transfer in disordered nanorings

We reveal an optimal exciton–phonon coupling in LH2 that suppresses disorder-induced localization and facilitates excitation de-trapping. This excitation transfer enhancement, mediated by environmental phonons, is attributed to energy relaxation toward extended, low energy excitons provided by the precise geometry of the LH2.

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Ultra Low-Energy Relaxation Oscillator With 230 fJ/cycle Efficiency

IEEE Journal of Solid-State Circuits ◽

10.1109/jssc.2016.2521886 ◽

2016 ◽

Vol 51 (4) ◽

pp. 789-799 ◽

Cited By ~ 17

Author(s):

Phillip M. Nadeau ◽

Arun Paidimarri ◽

Anantha P. Chandrakasan

Keyword(s):

Relaxation Oscillator ◽

Energy Relaxation ◽

Low Energy ◽

Cycle Efficiency

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Energy relaxation in CdSe/ZnSe quantum dots under the strong exciton-phonon coupling regime

physica status solidi (c) ◽

10.1002/pssc.200564743 ◽

2006 ◽

Vol 3 (4) ◽

pp. 924-927 ◽

Cited By ~ 2

Author(s):

A. V. Platonov ◽

T. Kiessling ◽

G. V. Astakhov ◽

A. A. Maksimov ◽

A. V. Larionov ◽

...

Keyword(s):

Quantum Dots ◽

Energy Relaxation ◽

Phonon Coupling

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Enhanced anharmonic phonon coupling and decay dominated by low‐energy phonons in CdS nanowires

Journal of Raman Spectroscopy ◽

10.1002/jrs.5664 ◽

2019 ◽

Vol 50 (10) ◽

pp. 1492-1501 ◽

Cited By ~ 1

Author(s):

Muhammad Faisal Iqbal ◽

Sara Saeed ◽

Lingling Wu ◽

Peng Zhu ◽

Deliang Wang

Keyword(s):

Low Energy ◽

Phonon Coupling ◽

Cds Nanowires

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Neutron Spectroscopy of Superconducting Fullerides

MRS Proceedings ◽

10.1557/proc-270-185 ◽

1992 ◽

Vol 270 ◽

Cited By ~ 1

Author(s):

Kosmas Prassides ◽

Christos Christides ◽

John Tomkinson ◽

Matthew J. Rosseinsky ◽

D. W. Murphy ◽

...

Keyword(s):

Low Temperatures ◽

High Energy ◽

Inelastic Neutron ◽

Low Energy ◽

Vibrational Modes ◽

Phonon Coupling ◽

Phonon Spectra ◽

Electron Phonon Coupling ◽

Wide Range ◽

Mechanism Of Superconductivity

ABSTRACTThe phonon spectra of pristine fullerene, superconducting K3C60 and saturation-doped Rb6C60 measured by inelastic neutron scatteringin the energy range 2.5 - 200 meV at low temperatures reveal substantial broadening of five-fold degenerate Hg intramolecular vibrational modes both in the low-energy radial and the high-energy tangential part of the spectrum. This provides strong evidence for a traditional phonon-mediated mechanism of superconductivity in the fullerides but with an electron-phonon coupling strength distributed over a wide range of energies (33-195 meV) as a result of the finite curvature of the fullerene spherical cage.

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Production of Defects in Metals by Collision Cascades: Tem Experiments

MRS Proceedings ◽

10.1557/proc-373-47 ◽

1994 ◽

Vol 373 ◽

Cited By ~ 2

Author(s):

M. A. Kirk

Keyword(s):

Low Energy ◽

Recoil Energy ◽

Dislocation Loops ◽

Phonon Coupling ◽

Loop Formation ◽

Electron Phonon Coupling ◽

Fast Neutron Irradiation ◽

Dilute Alloy ◽

Specific Metal

AbstractI will review our experimental TEM data on the production of dislocation loops by low energy ion bombardment to low doses, as simulations of similar collision cascades produced by fast neutron irradiation, in various metals and alloys. The dependence of vacancy dislocation loop formation on recoil energy, sample temperature, and specific metal or alloy will be examined. Special emphasis will be placed on the effects of dilute alloy additions. A model for cascade melting will be employed to understand these effects, and will require an examination of the role of electron-phonon coupling in cascade cooling and recrystallization. The formation of interstitial dislocation loops as cascade defects, and the influence of the nearby surfaces in these experiments will be briefly discussed.

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Origin of Low- and High-Energy Monopole Collectivity in 132Sn

Universe ◽

10.3390/universe7050145 ◽

2021 ◽

Vol 7 (5) ◽

pp. 145

Author(s):

Nikolay N. Arsenyev ◽

Alexey P. Severyukhin

Keyword(s):

Experimental Data ◽

Excited States ◽

Lower Energy ◽

High Energy ◽

Wave Functions ◽

Low Energy ◽

Phonon Coupling ◽

Skyrme Interaction ◽

Separable Approximation ◽

Hole Interaction

Beginning with the Skyrme interaction, we study the properties of the isoscalar giant monopole resonances (ISGMR) of 132Sn. Using the finite-rank separable approximation for the particle-hole interaction, the coupling between one- and two-phonon terms in the wave functions of excited states is taken into account in very large configurational spaces. The inclusion of the phonon–phonon coupling (PPC) results in the formation of a low-energy 0+ state. The PPC inclusion leads to a fragmentation of the ISGMR strength to lower energy states and also to a higher energy tail. Using the same set of parameters, we describe the available experimental data for the ISGMR characteristics of 118,120,122,124Sn and give a prediction for 126,128,130,132Sn.

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Size-dependence of the effective electron-phonon energy relaxation in hollow gold nanospheres

Opto-Electronics Review ◽

10.2478/s11772-014-0172-4 ◽

2014 ◽

Vol 22 (1) ◽

Cited By ~ 3

Author(s):

Y. Fan ◽

J. Li ◽

H. Chen ◽

X. Lu ◽

X. Liu

Keyword(s):

Size Dependence ◽

Energy Relaxation ◽

Noble Metal Nanoparticles ◽

Coupling Constant ◽

Phonon Coupling ◽

Gold Nanospheres ◽

Effective Electron ◽

Hollow Gold Nanospheres ◽

Electron Phonon Coupling ◽

Experimental Values

AbstractIn this paper the size-dependence of energy relaxation, which is induced by the electron-phonon (e-ph) interactions and the electron-surface (e-s) interactions in noble metal nanoparticles, is investigated. Then based on the analysis and the derivation of the e-s coupling constant in metal nanospheres, the formula of the effective electron-phonon coupling constant Geff of hollow gold nanospheres (HGNs) is deduced. Moreover, the correctness of the formulae gets proved by contrast analyses of the calculated Geff values and experimental values obtained from literature.

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