Magnetic susceptibility of diluted magnetic (semimagnetic) semiconductors: Further evidence for superexchange.

Magnetic susceptibility of diluted magnetic (semimagnetic) semiconductors: Further evidence for superexchange.
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稀释磁性(半磁性)半导体的磁化率:超级交换的进一步证据。

DOI:
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发表时间:
1988
期刊:
Physical Review B (Condensed Matter)
影响因子:
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通讯作者:
Galazka
Galazka
中科院分区:
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文献类型:
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作者:
Lewicki;Spalek;Furdyna;Galazka

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我们分析了 ${mathrm{Zn}}_{1mathrm{ensuremath{-}}mathrm{x}}$${mathrm{Mn}}_{mathrm{x}}$Se 的高温磁化率数据以及四元系的新结果${mathrm{Hg}}_{1mathrm{ensuremath{-}}mathrm{x}mathrm{ensuremath{-}}mathrm{y}}$${mathrm{Mn}}_{mathrm{x}}$${mathrm{Cd}}_{mathrm{y}}$Te 和${mathrm{Hg}}_{1mathrm{ensuremath{-}}mathrm{x}mathrm{ensuremath{-}}mathrm{y}}$${mathrm{Mn}}_{mathrm{x}}$${mathrm{Zn}}_{mathrm{y}}$Te。该分析提供了明确的新证据,证明阴离子 (Te,Se) 的超交换相互作用是 ${A}_{1mathrm{ensuremath{-}}x}^{mathrm{II}}$${mathrm{Mn}}_{mathrm{x}}$${mathrm{B}}^{mathrm{VI}}$ 合金中 d-d 耦合的主要机制。我们还简要讨论了这些系统的高温和低温磁性能之间的关系。
We analyze the high-temperature magnetic-susceptibility data for ${mathrm{Zn}}_{1mathrm{ensuremath{-}}mathrm{x}}$${mathrm{Mn}}_{mathrm{x}}$Se, together with new results for the quaternary systems ${mathrm{Hg}}_{1mathrm{ensuremath{-}}mathrm{x}mathrm{ensuremath{-}}mathrm{y}}$${mathrm{Mn}}_{mathrm{x}}$${mathrm{Cd}}_{mathrm{y}}$Te and ${mathrm{Hg}}_{1mathrm{ensuremath{-}}mathrm{x}mathrm{ensuremath{-}}mathrm{y}}$${mathrm{Mn}}_{mathrm{x}}$${mathrm{Zn}}_{mathrm{y}}$Te. This analysis provides unambiguous new evidence that superexchange interaction via anions (Te,Se) is the dominant mechanism of d-d coupling in ${A}_{1mathrm{ensuremath{-}}x}^{mathrm{II}}$${mathrm{Mn}}_{mathrm{x}}$${mathrm{B}}^{mathrm{VI}}$ alloys. We also discuss briefly the relationship between the high- and low-temperature magnetic properties of these systems.