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Глухова О. Е., Колесниченко П. А. Повышение эффективности метода SCC DFTB в описании межатомных взаимодействий и предсказании электронных свойств // Известия Саратовского университета. Новая серия. Серия: Физика. 2026. Т. 26, вып. 1. С. 53-61. DOI: 10.18500/1817-3020-2026-26-1-53-61, EDN: KMNROY
Повышение эффективности метода SCC DFTB в описании межатомных взаимодействий и предсказании электронных свойств
Тонкие плёнки оксида меди – один из наиболее эффективных материалов для газовых датчиков. Расширение сенсорных возможностей этого материала требует предсказательного моделирования. В данной работе для обеспечения физически корректного описания взаимодействия поверхности плёнки Cu2O с аналитами и её хеморезистивного отклика была осуществлена модификация параметризации для пар атомов Cu, O, C, H в рамках метода SCC DFTB (О–, С–, Н– атомы входят в состав детектируемых молекул спиртов и воды). Созданный набор базисных функций демонстрирует более точное воспроизведение метрических параметров кристаллической решетки (длин межатомных связей и длин векторов трансляций) на основании сравнения с метрическими и электропроводными данными экспериментальных исследований.
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