Journal ArticleDOI
Thomas-Fermi model and ferromagnetic phases of magnetic semiconductor quantum dots
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TLDR
The physical properties of many-body ferromagnetic confined systems come from the competing carrier-median-ferromagnetic and Coulomb interactions as mentioned in this paper, and the magnetic phases in gated quantum dots with holes can be controlled by the voltage or via optical methods.Abstract:
Many-particle electron states in semiconductor quantum dots with carrier-mediated ferromagnetism are studied theoretically within the self-consistent Boltzmann equation formalism. Depending on the conditions, a quantum dot may contain there phases: partially spin-polarized ferromagnetic, fully spin-polarized ferromagnetic, and paramagnetic phases. The physical properties of many-body ferromagnetic confined systems come from the competing carrier-mediated ferromagnetic and Coulomb interactions. The magnetic phases in gated quantum dots with holes can be controlled by the voltage or via optical methods.read more
Citations
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Some asymptotic methods for strongly nonlinear equations
TL;DR: In this paper, a survey of recent developments in asymptotic techniques, which are valid not only for weakly nonlinear equations, but also for strongly ones, is presented.
Journal ArticleDOI
Semiconductor Spintronics
TL;DR: Spintronics refers commonly to phenomena in which the spin of electrons in a solid state environment plays the determining role as mentioned in this paper, and is an emerging research field of electronics: spintronics devices are based on a spin control of electronics, or on an electrical and optical control of spin or magnetism.
Journal ArticleDOI
Single-exciton spectroscopy of semimagnetic quantum dots
TL;DR: In this paper, the Ramon y Cajal Program (MEC, Spain) and the Generalitat Valenciana (GV05-152) were used to support the work of the authors.
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Orbital pathways for Mn 2 + -carrier s p − d exchange in diluted magnetic semiconductor quantum dots
TL;DR: In this article, a combination of density functional theory (DFT) and perturbation theory calculations was used to identify the dominant orbital pathways responsible for Mn{}^{2+}$-carrier exchange.
Journal ArticleDOI
Electronic States of Magnetic Quantum Dots
TL;DR: In this paper, the authors study the quantum states of electrons in magnetically doped quantum dots as a function of exchange coupling between electron and impurity spins, the strength of Coulomb interaction, confining potential, and the number of electrons.
References
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Journal ArticleDOI
Spintronics: Fundamentals and applications
TL;DR: Spintronics, or spin electronics, involves the study of active control and manipulation of spin degrees of freedom in solid-state systems as discussed by the authors, where the primary focus is on the basic physical principles underlying the generation of carrier spin polarization, spin dynamics, and spin-polarized transport.
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Diluted magnetic semiconductors
TL;DR: In this paper, the physical properties of diluted magnetic semiconductors (DMS) of the type AII1−xMnxBVI (e.g., Cd1−mnxSe, Hg 1−mnsTe) were reviewed.
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Indirect exchange coupling of nuclear magnetic moments by conduction electrons
M. A. Ruderman,C. Kittel +1 more
TL;DR: In this paper, a calculation of the indirect exchange type coupling of nuclear magnetic moments in a metal by means of the hyperfine interaction with the conduction electrons was given, which appears to account qualitatively for the broad nuclear spin resonance lines observed in natural metallic silver.
Journal ArticleDOI
Electric-field control of ferromagnetism
Hideo Ohno,Daichi Chiba,Fumihiro Matsukura,T. Omiya,E. Abe,Tomasz Dietl,Tomasz Dietl,Yuzo Ohno,Keita Ohtani +8 more
TL;DR: By applying electric fields, the ability to externally control the properties of magnetic materials would be highly desirable from fundamental and technological viewpoints is demonstrated, particularly in view of recent developments in magnetoelectronics and spintronics.
Journal ArticleDOI
Interaction Between the d Shells in the Transition Metals
TL;DR: In this paper, it is shown that the spin coupling between the incomplete $d$ shells and the conduction electrons leads to a tendency for a ferromagnetic alignment of $d $ spins.