Stark shift and diamagnetic susceptibility in pyramidal core/shell/shell quantum structures under external perturbations and Konwent-like confinement
Journal of Magnetism and Magnetic Materials, cilt.657, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 657
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.jmmm.2026.174600
- Dergi Adı: Journal of Magnetism and Magnetic Materials
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Chimica, Compendex, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: Diamagnetic susceptibility, Hydrostatic pressure, Konwent-like potential, Pyramidal core/shell/shell, Stark shift, Temperature
- Sivas Cumhuriyet Üniversitesi Adresli: Evet
Özet
This work presents a comprehensive study of the Stark shift and diamagnetic susceptibility in pyramidal core/shell/shell quantum dots (CSSQDs) under a Konwent-like confinement potential. We systematically examine the impact of confinement potential parameters and geometric dimensions, along with the combined effects of hydrostatic pressure P and temperature T. Under the effective mass approximation, the Schrödinger equation is tackled numerically using the finite element method (FEM), combining accuracy with computational efficiency. Our findings indicate that both the Stark shift and the diamagnetic susceptibility are strongly influenced by the nanostructure's size and the characteristics of the confinement potential. Specifically, increasing hydrostatic pressure enhances the Stark shift and diamagnetic susceptibility, whereas higher temperatures lead to a notable decrease in these properties. Furthermore, the Stark shift exhibits pronounced sensitivity to the applied electric field, decreasing as the field strength increases, with the effect being most significant in larger quantum dot systems.