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

Author: Kityk Iwan V.   Fedorchuk Anatolii O.   Ozga Katarzyna   AlZayed Nasser S.  

Publisher: MDPI

E-ISSN: 2079-4991|5|2|541-553

ISSN: 2079-4991

Source: Nanomaterials, Vol.5, Iss.2, 2015-04, pp. : 541-553

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Abstract

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.