首页> 外文期刊>International Journal of Quantum Chemistry >EVIDENCE OF THE SUPERPOSITION OF DRUDE TYPE AND HOPPING TYPE TRANSPORT IN BORON-RICH SOLIDS
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EVIDENCE OF THE SUPERPOSITION OF DRUDE TYPE AND HOPPING TYPE TRANSPORT IN BORON-RICH SOLIDS

机译:富硼固体中原油型和跳跃型运输的叠加证据

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The dielectric function of the boron-rich solids in the FIR range is analyzed on the basis of their optical reflectivity spectra, which exhibit obviously typical, strongly increasing slopes with decreasing frequencies, It is shown that these slopes can be quantitatively described, when a superposition of Drude type and hopping type parts for the dynamical conductivity is assumed, The corresponding fits were simultaneously made for the real and imaginary parts of the dielectric function to achieve unambiguous parameters, The obtained results are consistent, e.g., with the DC conductivity of these semiconductors, and in particular in the case of beta-rhombohedral boron with the known energy band scheme and the related electronic properties. The bipolaron hopping model of the electronic transport in boron carbide turns out to be inappropriate. (C) 1997 Academic Press. [References: 32]
机译:根据FIR范围内的富硼固体的光反射光谱,分析了它们的介电功能,这些光谱显示出明显典型的,随频率降低而急剧增加的斜率,表明当叠加时,这些斜率可以被定量地描述。假设对动态电导率采用德鲁德型和跳跃型部件的模型,同时对介电函数的实部和虚部进行了相应拟合,以实现明确的参数,所获得的结果与这些半导体的直流电导率一致。 ,特别是在具有已知能带方案和相关电子性能的β-菱形硼的情况下。碳化硼中电子传输的双极子跳跃模型被证明是不合适的。 (C)1997学术出版社。 [参考:32]

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