Laser induced infrared spectral shift of the MgB2:Cr superconductor films

Alzayed, Nasser S.; Kityk, I.V.; Soltan, S.; El-Naggar, A.M.; Shahabuddin, Mohammad

doi:10.1016/j.saa.2014.10.068

Cited by 1 publication

(3 citation statements)

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“…In our approach, we showed an occurrence of some charge density acentricity (see Figure 5). Therefore, it should play a principal role in the optically stimulated second order optical dispersion and is in agreement with the corresponding experimental data [17,25]. …”

Section: Resultssupporting

confidence: 87%

“…The occurred charge density acentricity during the Cr doping confirmed the experimental results obtained by us concerning the nonlinear optical effects [5] as well as the observed laser induced infrared spectral shift [25]. …”

Section: Resultssupporting

confidence: 85%

“…The changes of the effective electronic charge density due to photoexcitaion also were taken into account. Both electronic as well as phonon excitations following the reference [25] were taken into account. One can see that the superposition of the external laser beam could also lead to the some energy shift of the bands in the L–A–Γ direction.…”

Section: Resultsmentioning

confidence: 99%

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Band Structure Simulations of the Photoinduced Changes in the MgB2:Cr Films

et al. 2015

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An approach for description of the photoinduced nonlinear optical effects in the superconducting MgB2:Cr2O3 nanocrystalline film is proposed. It includes the molecular dynamics step-by-step optimization of the two separate crystalline phases. The principal role for the photoinduced nonlinear optical properties plays nanointerface between the two phases. The first modified layers possess a form of slightly modified perfect crystalline structure. The next layer is added to the perfect crystalline structure and the iteration procedure is repeated for the next layer. The total energy here is considered as a varied parameter. To avoid potential jumps on the borders we have carried out additional derivative procedure.

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Section: Resultssupporting

confidence: 87%

Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

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