Abstract

The frequency and temperature dependences of the ac electrical conductivity of the MnGaInSe₄ single crystals have been investigated. It has been established that, in the temperature range of 295.5–360 K at frequencies of 2 × 10⁴–10⁶ Hz, the electrical conductivity obeys the regularity σ ~ f^S(0.1 ≤ S ≤ 1.0). It is shown that the frequency dependence of the electrical conductivity for the MnGaInSe₄ single crystal can be explained using a multiplet model and the conductivity in these single crystals is implemented via the band-hopping mechanism. The activation energies have been determined on the basis of dependences logσ ~ 10³/T.

中文翻译：

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MnGaInSe 4单晶的交流电导率

摘要

已经研究了MnGaInSe ₄单晶的交流电导率的频率和温度依赖性。已经确定的是，在温度范围295.5-360的K 2×10的频率⁴ -10 ⁶赫兹，导电率服从规律性σ〜˚F^小号（0.1≤小号≤1.0）。结果表明，可以使用多重模型解释MnGaInSe ₄单晶的电导率与频率的关系，并且这些单晶中的电导率是通过带跳频机制实现的。活化能已根据依赖关系logσ〜10 ³ / T确定。