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- W2017127407 abstract "In this paper we present theoretical analyses on an infrared (IR) spectrum of amorphous selenium. The system is described by a 216-atom-chain model, and a set of molecular-dynamics simulations is performed to generate vitreous structures and vibrational modes. To describe an electronic structure of the system we employ a complete neglect of differential overlap model parametrized by ab initio cluster calculations. An IR intensity is evaluated with the Berry-phase formula for an electronic polarization. The effect of the through-space electron transfer on the IR spectrum is studied by artificially changing the magnitude of matrix elements associated with the electron transfer between nonbonded atoms in the chain. We find that the through-space electron transfer leads to (i) the enhancement of the bending IR peak at 135cm−1 and (ii) the appearance of a new low-frequency peak around 50cm−1, thus resulting in a good agreement with the experiment. The mechanism is discussed by a simple dipole model." @default.
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- W2017127407 title "Effect of through-space electron transfer on infrared spectrum of amorphous selenium" @default.
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- W2017127407 doi "https://doi.org/10.1063/1.1898217" @default.
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