Spins in Optically Active Quantum Dots (Concepts and Methods) || Spin-Spin Interaction in Quantum Dots

✍ Scribed by Gywat, Oliver; Krenner, Hubert J.; Berezovsky, Jesse

• Publisher: Wiley-VCH Verlag GmbH & Co. KGaA
• Year: 2010
• Tongue: German
• Weight: 121 KB
• Edition: 1
• Category: Article
• ISBN: 3527408061
• DOI: 10.1002/9783527628988.ch6

✦ Synopsis

In this chapter we discuss various types of spin interaction in quantum dots. This involves spins from electrons and holes, as well as nuclear spins. The interaction of electrons includes the dipolar interaction of their spins as well as the Coulomb exchange interaction, which is an effective spin-spin interaction. The electronhole exchange interaction in an anisotropic environment mixes and reorders the exciton states, which has a practical impact on the transfer of spin quantum states onto photon polarization states and vice versa. Finally, the hyperfine interaction couples the system of electron spins to the nuclear spins embedded in the crystal lattice, which form an important reservoir for the damping of the electron spin dynamics in quantum dots.

6.1 Electron-Electron-Spin Interaction

Spins in Optically Active Quantum Dots. Concepts and Methods.