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arXiv 0705.3117cond-mat.dis-nn
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Drude电导率下降时空穴-空穴相互作用的重正化

Renormalization of hole-hole interaction at decreasing Drude conductivity

G. M. Minkov, A. A. Sherstobitov, A. V. Germanenko, O. E. Rut, B. N. Zvonkov

摘要:

分析了栅控GaAs/In $_x$ Ga $_{1-x}$ As/GaAs异质结中空穴-空穴相互作用对电导率的扩散贡献。结果表明,随着Drude电导率的降低,相互作用修正对电导率的影响既来自于对单重态和三重态通道的补偿,也来自于传统相互作用修正表达式中的前因子$α_i<1$.

英文摘要:

The diffusion contribution of the hole-hole interaction to the conductivity is analyzed in gated GaAs/In$_x$Ga$_{1-x}$As/GaAs heterostructures. We show that the change of the interaction correction to the conductivity with the decreasing Drude conductivity results both from the compensation of the singlet and triplet channels and from the arising prefactor $α_i<1$ in the conventional expression for the interaction correction.

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