Origin and control of high-temperature ferromagnetism in semiconductors.

@article{Kuroda2007OriginAC,
  title={Origin and control of high-temperature ferromagnetism in semiconductors.},
  author={Shinji Kuroda and Nozomi Nishizawa and Kǒki Takita and Masanori Mitome and Yoshio Bando and Krzysztof Osuch and Tomasz Dietl},
  journal={Nature materials},
  year={2007},
  volume={6 6},
  pages={
          440-6
        }
}
The extensive experimental and computational search for multifunctional materials has resulted in the development of semiconductor and oxide systems, such as (Ga,Mn)N, (Zn,Cr)Te and HfO(2), which exhibit surprisingly stable ferromagnetic signatures despite having a small or nominally zero concentration of magnetic elements. Here, we show that the ferromagnetism of (Zn,Cr)Te, and the associated magnetooptical and magnetotransport functionalities, are dominated by the formation of Cr-rich (Zn,Cr… Expand
Origins of ferromagnetism in transition-metal doped Si
We present results of the magnetic, structural, and chemical characterizations of Mn+-implanted Si displaying n-type semiconducting behavior and ferromagnetic ordering with Curie temperature, TC,Expand
Title Computational Materials Design of d 0 Ferromagnets
d ferromagnetism refers to a new class of magnetism, wherein the ferromagnets contain no magnetic elements, and has created significant interest in dilute magnetic semiconductors (DMSs). Based onExpand
Ferromagnetism in ZnO- and GaN-Based Diluted Magnetic Semiconductors: Achievements and Challenges
TLDR
This paper reports on the recent progress in the theoretical and experimental studies of ZnO- and GaN-based DMSs and makes special impact on critical discussion of experimental methods employed for investigation of their magnetic and optical properties. Expand
Growth and characterization of insulating ferromagnetic semiconductor (Al,Fe)Sb
We investigate the crystal structure, transport, and magnetic properties of Fe-doped ferromagnetic semiconductor (Al1−x,Fex)Sb thin films up to x = 14% grown by molecular beam epitaxy. All theExpand
Ferromagnetic nitride-based semiconductors doped with transition metals and rare earths
This review summarizes the state-of-the-art in the search for room temperature ferromagnetic semiconductors based on transition-metal- and rare-earth-doped nitrides. The major methods of synthesisExpand
Tunable High-TC ferromagnetism in Sn4+-doped (InFe0.04)2O3 nanoparticles: a vital role of electron doping
Abstract Inspired by the ongoing development of multifunctional and hybrid nanomaterials for spintronics application, the structural, electronic and magnetic properties of FeSn co-doped In2O3Expand
Iron-based n-type electron-induced ferromagnetic semiconductor
Carrier-induced ferromagnetic semiconductors (FMSs) have been intensively studied for decades as they have novel functionalities that cannot be achieved with conventional metallic materials. TheseExpand
A story of high-temperature ferromagnetism in semiconductors.
TLDR
The methods of synthesis of semiconductors and oxides showing ferromagnetic features persisting to room temperature, as well as the application of element-specific nano-analytic tools are described and shown to reveal the presence of nano-scale phase separations. Expand
Electric-field-controlled ferromagnetism in high-Curie-temperature Mn0.05Ge0.95 quantum dots.
TLDR
It is found that by applying electric fields to a MOS gate structure, the ferromagnetism of the channel layer can be effectively modulated through the change of hole concentration inside the quantum dots. Expand
Origin and control of ferromagnetism in dilute magnetic semiconductors and oxides (invited)
The author reviews the present understanding of the hole-mediated ferromagnetism in magnetically doped semiconductors and oxides as well as the origin of high temperature ferromagnetism in materialsExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 50 REFERENCES
Search for ferromagnetism in transition-metal-doped piezoelectric ZnO
We present results of a computational study of ZnO in the presence of Co and Mn substitutional impurities. The goal of our work is to identify potential ferromagnetic ground states within theExpand
Ferromagnetism of ZnO and GaN: A Review
AbstractThe observation of ferromagnetism in magnetic ion doped II–VI diluted magnetic semiconductors (DMSs) and oxides, and later in (Ga,Mn)As materials has inspired a great deal of researchExpand
High-Curie-temperature ferromagnetism in self-organized Ge1−xMnx nanocolumns
TLDR
A high-TC (>400K) ferromagnetic phase of (Ge,Mn) epitaxial layer of semiconductor nanostructures that is close to Ge2Mn, which corresponds to an unknown germanium-rich phase, and they have a uniaxially elongated diamond structure. Expand
Suppression of ferromagnetism due to hole doping in Zn1−xCrxTe grown by molecular-beam epitaxy
Electric and magnetic properties were investigated on p-type Zn1−xCrxTe doped with nitrogen (N) as an acceptor. Thin films of p-Zn1−xCrxTe(x≦0.09) were grown by molecular-beam epitaxy with the supplyExpand
Room-temperature ferromagnetism in a II-VI diluted magnetic semiconductor Zn(1-x)Cr(x)Te.
TLDR
Magnetic circular dichroism measurements showed a strong interaction between the sp carriers and localized d spins, indicating that Zn(1-x)Cr(x)Te is a diluted magnetic semiconductor. Expand
Wide band gap ferromagnetic semiconductors and oxides
Recent advances in the theory and experimental realization of ferromagnetic semiconductors give hope that a new generation of microelectronic devices based on the spin degree of freedom of theExpand
Significant enhancement of ferromagnetism in Zn1-xCrxTe doped with iodine as an n-type dopant.
TLDR
The observed systematic correlation of ferromagnetism with the doping of charge impurities of both the p and n type, suggesting a key role of the position of Fermi level within the impurity d state, is discussed on the basis of the double-exchange interaction. Expand
First principles materials design for semiconductor spintronics
Materials design of new functional diluted magnetic semiconductors (DMSs) is presented based on first principles calculations. The stability of the ferromagnetic state in ZnO-, ZnS-, ZnSe-, ZnTe-,Expand
Chemical manipulation of high-T(C) ferromagnetism in ZnO diluted magnetic semiconductors.
We report the use of targeted p- and n-type chemical perturbations to manipulate high-T(C) ferromagnetism in Mn(2+):ZnO and Co(2+):ZnO in predictable and reproducible ways. We demonstrate a clearExpand
Low-temperature ferromagnetism in (Ga, Mn)N: Ab initio calculations
The magnetic properties of dilute magnetic semiconductors (DMSs) are calculated from first-principles by mapping theab initio results on a classical Heisenberg model. By using theExpand
...
1
2
3
4
5
...