Journal Article10.1103/PHYSREVLETT.89.127201
Monitoring statistical magnetic fluctuations on the nanometer scale.
Gerd Bacher,A. A. Maksimov,H. Schömig,V. D. Kulakovskii,M. K. Welsch,Alfred Forchel,P. S. Dorozhkin,A. V. Chernenko,Seongbok Lee,Margaret Dobrowolska,Jacek K. Furdyna +10 more
96
TL;DR: This work uses the characteristic photoluminescence signal of a single electron-hole pair confined in one magnetic semiconductor quantum dot, which sensitively depends on the alignment of the magnetic ion spins to measure statistical fluctuations of the magnetization.
read more
Abstract: Statistical fluctuations of the magnetization are measured on the nanometer scale. As the experimental monitor we use the characteristic photoluminescence signal of a single electron-hole pair confined in one magnetic semiconductor quantum dot, which sensitively depends on the alignment of the magnetic ion spins. Quantitative access to statistical magnetic fluctuations is obtained by analyzing the linewidth broadening of the single dot emission. Our all-optical technique allows us to address a magnetic moment of only $\ensuremath{\approx}100{\ensuremath{\mu}}_{B}$ and to resolve statistical changes on the order of a few ${\ensuremath{\mu}}_{B}$.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Tuning the optical and magnetic properties of II–VI quantum dots by post‐growth rapid thermal annealing
T. Gurung,Sebastian Mackowski,H. E. Jackson,Leigh M. Smith,Wolfgang Heiss,Jacek Kossut,Grzegorz Karczewski +6 more
TL;DR: In this paper, the optical and magnetic properties of CdTe-based quantum dots (QDs) can be tuned by post-growth annealing, and the photoluminescence shifts towards high energies.
5
Probing magneto-elastic phenomena through an effective spin-bath coupling model
TL;DR: In this article, a phenomenological model is constructed, that captures the effects of coupling magnetic and elastic degrees of freedom, in the presence of external, stochastic perturbations, in terms of the interaction of magnetic moments with a bath, whose individual magnetic moments cannot be resolved and only their mesoscopic properties are relevant.
5
Optical Properties of Manganese-Doped Individual CdTe Quantum Dots
Lucien Besombes,Yoan Léger,L. Maingault,David Ferrand,Catherine Bougerol,Henri Mariette,Joel Cibert +6 more
TL;DR: In this paper, the magnetic state of a single magnetic ion embedded in an individual quantum dot is optically probed using microspectroscopy using six emission lines at zero magnetic field.
The impact of position of Mn δ-doping on the formation of CdTe/ZnTe quantum dots with single magnetic ions
Karol Gietka,J. Kobak,E. Janik,J.-G. Rousset,Jolanta Borysiuk,Michał Nawrocki,Andrzej Golnik,Piotr Kossacki,Wojciech Pacuski +8 more
TL;DR: In this paper, the authors used molecular beam epitaxy (MBE) of CdTe/ZnTe QDs (zinc blend structure) and studied the impact of the position of Mn δ -doping on their optical properties.
5
References
Spintronics: a spin-based electronics vision for the future.
Stuart A. Wolf,Stuart A. Wolf,David D. Awschalom,Robert A. Buhrman,J. M. Daughton,S. von Molnar,Michael L. Roukes,Almadena Chtchelkanova,Daryl Treger +8 more
TL;DR: This review describes a new paradigm of electronics based on the spin degree of freedom of the electron, which has the potential advantages of nonvolatility, increased data processing speed, decreased electric power consumption, and increased integration densities compared with conventional semiconductor devices.
11.8K
Quantum computation with quantum dots
TL;DR: In this paper, a universal set of one-and two-quantum-bit gates for quantum computation using the spin states of coupled single-electron quantum dots is proposed, and the desired operations are effected by the gating of the tunneling barrier between neighboring dots.
Room Temperature Magnetic Quantum Cellular Automata
TL;DR: Network of interacting submicrometer magnetic dots are used to perform logic operations and propagate information at room temperature, which offers a several thousandfold increase in integration density and a hundredfold reduction in power dissipation over current microelectronic technology.
1.1K
Quantum-confined Stark effect in single CdSe nanocrystallite quantum dots
TL;DR: In this paper, the quantum-confined Stark effect in single cadmium selenide (CdSe) nanocrystallite quantum dots was studied, and the electric field dependence of the single-dot spectrum is characterized by a highly polarizable excited state (∼10 5 cubic angstroms, compared to typical molecular values of order 10 to 100 cubic angramss), in the presence of randomly oriented local electric fields that change over time.
966
Electron Spin and Optical Coherence in Semiconductors
David D. Awschalom,J. M. Kikkawa +1 more
TL;DR: In this paper, the authors discuss the effects of quantum mechanical effects on chip design parameters, such as charge distribution, and how these effects will affect performance as device sizes shrink and how to handle them.
447