Exactly solvable spin dynamics of an electron coupled to a large number of nuclei; the electron-nuclear spin echo in a quantum dot

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776107100159· OSTI ID:21075689

Kozlov, G. G. ^[1]

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1. St. Petersburg State University, Institute of Physics (Russian Federation), E-mail: [e-mail]

The model used to describe the spin dynamics in quantum dots after optical excitation is considered. Problems of the electron-spin polarization decay and the dependence of the steady-state polarization on magnetic field are solved on the basis of exact diagonalization of the model Hamiltonian. An important role of the nuclear state is shown and methods of its calculation for different regimes of optical excitation are proposed. The effect of spin echo generation after application of a {pi} pulse of a magnetic field is predicted for the system under consideration.

• OSTI ID: 21075689
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 105, Issue 4; Other Information: DOI: 10.1134/S1063776107100159; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRONS
EXACT SOLUTIONS
EXCITATION
HAMILTONIANS
MAGNETIC FIELDS
POLARIZATION
QUANTUM DOTS
SPIN
SPIN ECHO
SPIN ORIENTATION
STEADY-STATE CONDITIONS