Journal ArticleDOI
Zener Model Description of Ferromagnetism in Zinc-Blende Magnetic Semiconductors
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TLDR
Zener's model of ferromagnetism, originally proposed for transition metals in 1950, can explain T(C) of Ga(1-)(x)Mn(x)As and that of its II-VI counterpart Zn(1)-Mn (x)Te and is used to predict materials with T (C) exceeding room temperature, an important step toward semiconductor electronics that use both charge and spin.Abstract:
Ferromagnetism in manganese compound semiconductors not only opens prospects for tailoring magnetic and spin-related phenomena in semiconductors with a precision specific to III-V compounds but also addresses a question about the origin of the magnetic interactions that lead to a Curie temperature (T(C)) as high as 110 K for a manganese concentration of just 5%. Zener's model of ferromagnetism, originally proposed for transition metals in 1950, can explain T(C) of Ga(1-)(x)Mn(x)As and that of its II-VI counterpart Zn(1-)(x)Mn(x)Te and is used to predict materials with T(C) exceeding room temperature, an important step toward semiconductor electronics that use both charge and spin.read more
Citations
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Indication of ferromagnetism in molecular-beam-epitaxy-derived N-type GaMnN
M. E. Overberg,Cammy R. Abernathy,Stephen J. Pearton,Nikoleta Theodoropoulou,K. T. McCarthy,Arthur F. Hebard +5 more
TL;DR: Growth by molecular-beam epitaxy of the dilute magnetic alloy GaMnN is reported in this article, which shows the anomalous Hall effect, negative magnetoresistance, and magnetic hysteresis at 10 K, indicating that Mn is incorporating into the GaN and forming the ferromagnetic semiconductor GaNN.
Journal ArticleDOI
PARSEC – the pseudopotential algorithm for real‐space electronic structure calculations: recent advances and novel applications to nano‐structures
Leeor Kronik,Adi Makmal,Murilo L. Tiago,Murilo L. Tiago,Manuel Alemany,Manish Jain,Xiangyang Huang,Yousef Saad,James R. Chelikowsky,James R. Chelikowsky +9 more
TL;DR: The formalism, as well as numerical and implementation issues behind PARSEC – the pseudopotential algorithm for real‐space electronic structure calculations – are described and illustrated.
Journal ArticleDOI
Relationship between the structural and magnetic properties of Co-doped Sn O 2 nanoparticles
TL;DR: In this article, the structural, optical, and magnetic properties of chemically synthesized pure and Co-doped powders using x-ray diffraction (XRD), diffuse reflectance spectroscopy (DSS) and magnetometry were investigated.
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Antiferromagnetism in bulk Zn1−xCoxO magnetic semiconductors prepared by the coprecipitation technique
TL;DR: In this paper, a paramagnetic behavior for the Co-doped ZnO samples with paramagnetic Co amount smaller than the nominal concentration was shown. But the remaining Co is antiferromagnetic coupled through oxygen.
References
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Journal ArticleDOI
Making Nonmagnetic Semiconductors Ferromagnetic
TL;DR: The magnetic coupling in all semiconductor ferromagnetic/nonmagnetic layered structures, together with the possibility of spin filtering in RTDs, shows the potential of the present material system for exploring new physics and for developing new functionality toward future electronics.
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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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(Ga,Mn)As: A new diluted magnetic semiconductor based on GaAs
Hideo Ohno,Aidong Shen,Fumihiro Matsukura,Akira Oiwa,Akira Endo,Shingo Katsumoto,Yasuhiro Iye +6 more
TL;DR: In this article, a new GaAs-based diluted magnetic semiconductor, (Ga,Mn)As, was prepared by molecular beam epitaxy and the lattice constant was determined by x-ray diffraction and shown to increase with the increase of Mn composition, x.
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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.