Magnetic Properties of Manganese Telluride Single Crystals

Komatsubara, T.; Murakami, Mutsuaki; Hirahara, Eiji

doi:10.1143/jpsj.18.356

Cited by 54 publications

(30 citation statements)

References 4 publications

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“…35 Without doping, MnTe is nondegenerate. In doped cases, [36][37][38][39] band tails created by doped impurities can cover, more or less, the gap. But these systems, which are disordered by doping, are not a purpose of our present study.…”

Section: Application To Mntementioning

confidence: 99%

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Theory and simulation of spin transport in antiferromagnetic semiconductors: Application to MnTe

et al. 2011

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In this paper we study the parallel spin current in an antiferromagnetic semiconductor thin film where we take into account the interaction between itinerant spins and lattice spins. The spin model is an anisotropic Heisenberg model. Here we use the Boltzmann equation with numerical data on cluster distribution obtained by Monte Carlo simulations and cluster-construction algorithms. We study the cases of degenerate and nondegenerate semiconductors. The spin resistivity in both cases is shown to depend on the temperature, with a broad maximum at the transition temperature of the lattice spin system. The shape of the maximum depends on the spin anisotropy and on the magnetic field. It shows, however, no sharp peak in contrast to ferromagnetic materials. Our method is applied to MnTe. Comparison to experimental data is given.

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Section: Application To Mntementioning

confidence: 99%

“…Cd 1−x Mn x Te can have one of the following structures, the NiAs structure, the zinc-blende one, or a mixed phase. [36][37][38][39] …”

Section: Andmentioning

confidence: 99%

Theory and simulation of spin transport in antiferromagnetic semiconductors: Application to MnTe

et al. 2011

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“…[16][17][18][19][20] The temperature dependence of the lattice parameter c led to the conclusion that the magnetic structure was an antiparallel stacking of ͑001͒ ferromagnetic planes 21 and magnetic anisotropy measurements 22 demonstrated that the spins lie in the ͑001͒ plane. This has been confirmed by magnetic susceptibility measurements, 20 and finally directly measured by elastic neutron scattering.…”

Section: Introductionmentioning

confidence: 99%

Spin-wave measurements on hexagonalMnTeofNiAs-type structure by inelastic neutron scattering

et al. 2006

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MnTe with a hexagonal structure of NiAs type is an antiferromagnetic semiconductor below the Néel temperature T N = 310 K. The spin-wave excitations of a MnTe single crystal have been measured at T =11 K by inelastic neutron scattering. The experimental spin-wave dispersions, obtained along five high-symmetry directions of the reciprocal space, have been modeled with a Heisenberg Hamiltonian including isotropic exchanges up to the third nearest neighbors and a planar magnetic anisotropy. This yielded the exchange integral values J 1 = −21.5 K, J 2 = 0.67 K, and J 3 = −2.87 K. These results are presented and compared to experimental values of relevant diluted magnetic semiconductors, allowing a discussion on a generic description of the distance dependence of the nearest-neighbor magnetic interactions.

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“…Basic magnetic, transport, and structural properties have been studied very early [2][3][4][5]. Magnetic order and anisotropy have been investigated in more details later on [6][7][8][9][10]. The magnetic order of MnTe could be viewed as Mn moments aligned ferromagnetically in the basal plane of the hexagonal lattice, these planes being antiferromagnetically stacked along the c axis.…”

Section: Introductionmentioning

confidence: 99%

Neutron scattering study of structural and magnetic properties of hexagonal MnTe

Szuszkiewicz

Hennion

Witkowska

et al. 2005

phys. stat. sol. (c)

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Single crystals of hexagonal MnTe (in NiAs structure) have been grown by the physical vapour transport method and investigated by neutron scattering techniques. Lattice parameters and magnetic intensity of Bragg peaks characteristic of the antiferromagnetic order of the first kind have been measured by elastic neutron scattering in the temperature range from T = 10 K to the Néel temperature T N = 310 K. A smooth temperature dependence of the lattice parameter values a and c as well as of the c/a ratio has been found. A brief survey of phonon and magnon modes has been performed at room temperature by inelastic neutron scattering, yielding acoustic phonon branches along a* and c* directions at frequencies below 3 THz and the presence of the magnon mode, already strongly damped due to the vicinity of the magnetic phase transition.

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Magnetic Properties of Manganese Telluride Single Crystals

Cited by 54 publications

References 4 publications

Theory and simulation of spin transport in antiferromagnetic semiconductors: Application to MnTe

Theory and simulation of spin transport in antiferromagnetic semiconductors: Application to MnTe

Spin-wave measurements on hexagonalMnTeofNiAs-type structure by inelastic neutron scattering

Neutron scattering study of structural and magnetic properties of hexagonal MnTe

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