Journal ArticleDOI
X-ray absorption spectroscopy of transition-metal doped diluted magnetic semiconductors Zn1−xMxO
Jun Okabayashi,K. Ono,Masaki Mizuguchi,M. Oshima,Subhra Sen Gupta,D. D. Sarma,Takashi Mizokawa,A. Fujimori,M. Yuri,C. T. Chen,Tomoaki Fukumura,Masashi Kawasaki,Hideomi Koinuma +12 more
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TLDR
In this paper, the electronic structure of Zn1−xMxO (M: 3d transition metal) was investigated by x-ray absorption spectroscopy using configuration-interaction cluster-model analyses.Abstract:
We have investigated the electronic structure of Zn1−xMxO (M: 3d transition metal) by x-ray absorption spectroscopy. Using configuration–interaction cluster-model analyses, electronic structure parameters have been deduced and their chemical trend is discussed. Results show that the p–d exchange constant Nβ is negative and large in cases of Mn, Fe, and Co, which is consistent with the enhancement of magnetic circular dichroism.read more
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Ferromagnetism and possible application in spintronics of transition-metal-doped ZnO films
TL;DR: In this paper, the magnetic properties and intrinsic ferromagnetism of transition-metal (TM)-doped ZnO films, which are typical diluted magnetic oxides used in spintronics, are discussed.
Journal ArticleDOI
Magnetism in dilute magnetic oxide thin films based on SnO2
C. B. Fitzgerald,Munuswamy Venkatesan,Lucio Strazzabosco Dorneles,R. Gunning,Plamen Stamenov,J. M. D. Coey,P.A. Stampe,R.J. Kennedy,Eduardo Ceretta Moreira,U.S. Sias +9 more
TL;DR: In this article, the donor impurity-band model of ferromagnetism in semiconductors and the magnetic defect model were discussed in relation to (a) the donor-impurity band model and (b) the magnetic defects model.
Journal ArticleDOI
Magnetic oxide semiconductors
TL;DR: In this article, the feasibility of magnetic oxide semiconductors was examined from the viewpoint of feasibility to evaluate the ferromagnetism of Co-doped TiO2 and transition metal-dope ZnO.
Journal ArticleDOI
Electronic structures of (Zn, TM)O (TM: V, Cr, Mn, Fe, Co, and Ni) in the self-interaction-corrected calculations
TL;DR: In this article, the electronic structures of ZnO-based dilute magnetic semiconductors within the self-interaction-corrected local density approximation were calculated and compared with those calculated within the standard LDA.
Journal ArticleDOI
Effect of Co and O defects on the magnetism in Co-doped ZnO: Experiment and theory
Gap Soo Chang,Ernst Z. Kurmaev,Danil W. Boukhvalov,Larisa D. Finkelstein,Silviu Colis,Tor Pedersen,Alexander Moewes,Aziz Dinia +7 more
TL;DR: In this paper, the electronic structure of diluted magnetic semiconductors was investigated using soft x-ray emission spectroscopy and first-principles calculations using X-ray absorption and emission measurements revealed that most Co dopants are incorporated at the Zn sites and free charge carriers are absent over a wide range of Co concentrations.
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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Magnetic and electric properties of transition-metal-doped ZnO films
TL;DR: In this article, a 3d transition metal-doped ZnO films (n-type Zn1−xMxO) were formed on sapphire substrates using a pulsed-laser deposition technique, and their magnetic and electric properties were examined.
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Electron Correlation and Ferromagnetism of Transition Metals
TL;DR: In this paper, the electron correlation in a narrow energy band is discussed taking into account the multiple scattering between two electrons, and an approximate expression of the effective magnitude of the interaction is derived.
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Hole-mediated ferromagnetism in tetrahedrally coordinated semiconductors
TL;DR: In this paper, a mean field model of ferromagnetic semiconductors mediated by delocalized or weakly localized holes in zinc-blende and wurzite diluted magnetic semiconductor was presented.
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An oxide-diluted magnetic semiconductor: Mn-doped ZnO
TL;DR: In this article, the lattice constants of both a and c axes of wurtzite Zn1−xMnxO films (x < 0.35) increase and the band gap expands although considerable in-gap absorption develops.