Fast exciton spin relaxation in single quantum dots
I. Favero, Guillaume Cassabois, C. Voisin, C. Delalande, Ph. Roussignol, R. Ferreira, C. Couteau, J. P. Poizat, J. M. Gérard
Abstract
Exciton spin relaxation is investigated in single epitaxially grown semiconductor quantum dots in order to test the expected spin relaxation quenching in this system. We study the polarization anisotropy of the photoluminescence signal emitted by isolated quantum dots under steady-state or pulsed non-resonant excitation. We find that the longitudinal exciton spin relaxation time is strikingly short (≤100 ps) even at low temperature. This result breaks down the picture of a frozen exciton spin in quantum dots.
Create a lesson
Related papers
Quantum Spin Wave Theory with Multi-Spin Interactions for Magnetic Materials Modeling
Andrey Rybakov, Marco Marino, Yaroslav M. Blanter et al.
A Construction Framework for Three-Dimensional Topological Magnetic Textures
Maria Azhar, Sandra C. Shaju, Karin Everschor-Sitte
Current control of spin-wave transport in YIG via the VO2 insulator-to-metal transition
Aleksei A. Nikitin, Nikolai Kuznetsov, Lukáš Flajšman et al.
Continuum Dirac Theory and Nonlinear Extensions of a Chain of Alternating non-linear springs: an SSH version of the Fermi-Pasta-Ulam-Tsingou model
Gerardo G. Naumis, Ilder I. Salgado, Jorge Fujioka
Synchronization and Spatiotemporal Phases in Driven Precessing Domain Walls
Luz Pérez Herrera, Enzo Fabrizio Pusiol, Alejandro B. Kolton
Galilean electrodynamics fluctuation in a superfluid: from general coordinate invariance to Tkachenko mode
Neng-Chun Chiu, Tzu-Ken Shen, Siau Ihan