论文信息 - Spin dynamics in Zn1−xMnxTe

Spin dynamics in Zn1−xMnxTe

First results of inelastic neutron scattering studies of quasiharmonic magnons in Zn1−xMnxTe are reported. Measurements carried out on two single‐crystal samples with x=0.65 and x=0.41 at T=4.2–5.0 K revealed broad excitation modes, which were in excellent agreement with the results of theoretical modelling. Results for x=0.65 yield JNN=(7.9±0.2) K which is the first determination of the nearest‐neighbor exchange constant in Zn1−xMnxTe in this x region. Data taken at higher temperatures showed only weak renormalization of the energy spectra.

J. Furdyna | D. Huber | W. Ching | J. Rhyne | T. Giebultowicz

[1] Jacek K. Furdyna,et al. Diluted magnetic semiconductors , 1988 .

[2] J. Furdyna,et al. Magnetic properties of diluted magnetic semiconductors: A review (invited) , 1987 .

[3] A. Twardowski,et al. Spinglass behaviour of Zn1−xMnxSe and Zn1−xMnxTe semimagnetic semiconductors , 1986 .

[4] Lewicki,et al. Magnetic susceptibility of semimagnetic semiconductors: The high-temperature regime and the role of superexchange. , 1986, Physical review. B, Condensed matter.

[5] D. Huber,et al. Static and dynamic spin correlations and exchange interactions in Cd1−xMnxTe , 1986 .

[6] J. Furdyna,et al. Lattice parameters of Zn1−xMnxSe and tetrahedral bond lengths in AII1−xMnxBVI alloys , 1985 .

[7] H. Ehrenreich,et al. Exchange mechanisms in diluted magnetic semiconductors , 1985 .

[8] J. Furdyna,et al. Magnetic susceptibility and spin-glass transition in Zn 1 − x Mn x Te , 1984 .

[9] D. Huber,et al. Dynamics of the fcc Heisenberg antiferromagnet with nearest-neighbor interactions. II. Dilute arrays , 1982 .

[10] V. F. Sears,et al. Spin correlations inZn1−cMncTealloys , 1982 .

[11] L. Walker,et al. Computer model of metallic spin-glasses , 1977 .

[12] D. Huber,et al. Numerical studies of spin-wave dynamics in Heisenberg spin-glasses , 1981 .