Magnetic Properties.pdf

Magnetic properties of parabolic quantum dots are studied in the presence of spin-orbit interaction. Theoretical calculations show that the spin-orbit interaction leads to an enhancement of paramagnetism in the dots. The magnetization and susceptibility of the dots exhibit interesting behavior at low temperatures, with abrupt changes at low magnetic fields due to the crossing of spin-split electron levels. The Rashba term in the spin-orbit interaction potential is used to examine the impact on the magnetization and susceptibility of the dots. The results demonstrate the possibility of controlling the effect by external electric fields or dot design. The calculations are performed using parameters of InAs semiconductor quantum dots, and the energy level behavior and thermodynamical properties of parabolic quantum dots in magnetic fields are discussed. The study provides insight into the magnetic properties of quantum dots and their potential applications in spintronics and quantum computing. Key findings include:

The spin-orbit interaction enhances paramagnetism in the dots
Magnetization and susceptibility exhibit interesting behavior at low temperatures
Abrupt changes occur at low magnetic fields due to the crossing of spin-split electron levels
The Rashba term in the spin-orbit interaction potential is used to examine the impact on the magnetization and susceptibility
The effect can be controlled by external electric fields or dot design
The study provides insight into the magnetic properties of quantum dots and their potential applications in spintronics and quantum computing.