Results 41 to 50 of about 37,276 (209)
Relativistic effects in confined helium-like atoms
, 2021 The first-order relativistic effects such as relativistic correction to the kinetic energy, spin-orbit interaction and one-and two-body Darwin terms for the ground and excited states of confined H−, He, Li+ and Be++ atoms have been investigated.
Demir, Celalettin +3 more
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Confined Vacuum Resonances as Artificial Atoms with Tunable Lifetime
ACS Nano, 2022 Atomically engineered artificial lattices are a useful tool for simulating complex quantum phenomena, but have so far been limited to the study of Hamiltonians where electron-electron interactions do not play a role -- but it's precisely the regime in which these interactions do matter where computational times lend simulations a critical advantage ...
Rasa Rejali +6 more
openaire +5 more sources
Intrinsic correlation between β-relaxation and spatial heterogeneity in a metallic glass
Nature Communications, 2016 Beta-relaxation in glasses is commonly attributed to the confined motions of constituent atoms in nanosized domains, but there is no direct evidence so far. Here, Zhu et al. show the correlation between the evolution of spatial heterogeneity at nanoscale
F. Zhu +7 more
doaj +1 more source
High-order harmonic generation from confined Rydberg atoms
, 2015 We report results from our simulations of High Harmonic Generation (HHG) from a confined atom in a Rydberg state. We find that for the n = 2 excited state of H the cut-off of the harmonic spectrum is substantially extended compared to that for a free ...
ALTUN, ZİKRİ, BLEDA, ERDİ ATA
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Edge-confined under-coordinated Cu atoms on Ru nanosheets enable efficient CH4 activation
, 2022 In this issue of Chem Catalysis, Jinchang Fan et al. demonstrate that Cu atoms confined in ultrathin 2D metallic Ru nanosheets (Ru11Cu NSs) favor bi-coordinated adsorption of O∗ species to reduce the activation energy barrier for a facile C–H bond ...
Pawan Kumar (3718075)
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Electronic structure and dynamics of confined atoms
, 2021 Confined atomic systems are of great importance owing a multitude of possible applications in various areas of science and technology. Of particular interest are atoms encaged in the $$\hbox {C}_{{60}}$$ molecule, $$\hbox {A}@\hbox {C}_{{60}}$$, since ...
J. Jose +3 more
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Ultracold atoms in dressed potentials
, 2018 Time-varying fields are widely used to extend the accessible range of trapping potentials for ultracold atoms. This work explores two very different examples of such fields, in the radiofrequency and optical regimes, whose interactions with trapped atoms
Harte, Tiffany
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Coulomb correlation and information entropies in confined helium-like atoms
, 2021 The present work studies aspects of the electronic correlation in confined $$\hbox {H}^{-}$$, He and $$\hbox {Li}^+$$ atoms in their ground states using the informational entropies.
Wallas Santos Nascimento +2 more
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Manipulation of ultracold atoms using magnetic and optical fields [PDF]
, 2006 The loading and guiding of a launched cloud of cold atoms with the optical dipole force are theoretically and numerically modelled. A far-off resonance trap can be realised using a high power Gaussian mode laser, red-detuned with respect to the principal
Pritchard, Matthew J. +1 more
core
AIP Advances, 2012 Extensive ab initio molecular dynamics simulations indicate that hydrogen can be confined in single walled carbon nanotubes to form high density and high pressure H2 molecular lattice, which has peculiar shell and axial structures depending on the ...
Yueyuan Xia +5 more
doaj +1 more source