Helical Quantum States in HgTe Quantum Dots with Inverted Band Structures
Helical Quantum States in HgTe Quantum Dots with Inverted Band Structures
We investigate theoretically the electron states in HgTe quantum dots (QDs) with inverted band structures. In sharp contrast to conventional semiconductor quantum dots, the quantum states in the gap of the HgTe QD are fully spin-polarized and show ringlike density distributions near the boundary of the QD and spin-angular momentum …