Energy Regimes, Thresholds and Delimitation in Ellipsoidal Quantum Dots with a Modified Hellmann Potential

Deleted Journal, Год журнала: 2025, Номер 3(2), С. 304 - 320

Опубликована: Апрель 5, 2025

This study explores energy regimes, thresholds, and delimitation in ellipsoidal quantum dots with a modified Hellmann potential, combining Coulomb Yukawa interactions. Using coordinates, we solve the Schrödinger equation numerically via Finite Difference Method (FDM). The radial distance is approximated as , valid for moderate eccentricities but introducing errors highly elongated dots. Three regimes are identified: low-energy ( ) shallow confinement, moderate-energy 7) intermediate high-energy strong confinement localized states. Threshold analysis reveals critical values eccentricity, strength, repulsion, screening parameters, determining bound state stability. Delimitation shows increased level spacing discrete density of states higher confirming stronger material properties InAs, including its small effective mass low bandgap, significantly influence levels wavefunctions. These findings have practical implications designing dot-based devices, such infrared photodetectors, lasers, tunable bandgap systems. work provides robust framework understanding engineering dots, highlighting interplay between geometry, confinement.

Язык: Английский

Ray and Wave Optics in an Optical Wormhole

Physics Letters B, Год журнала: 2025, Номер unknown, С. 139626 - 139626

Опубликована: Июнь 1, 2025

Язык: Английский