This article is cited in 1 paper

CONDENSED MATTER

Effective mass of quasiparticles in a Wigner liquid

È. G. Batyev

Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk

Abstract: The exchange interaction and effective mass of fermionic excitation in a low-density ($r_S\gg1$). system of two-dimensional electrons are estimated from simple considerations. For the ratio of effective (renormalized due to interaction) to band mass, the dependence $m^*/m =(A/\sqrt{r_S}) \exp(\alpha\sqrt{r_S})$, is obtained, where $A$ and $\alpha$ are constants on the order of unity. The effective $g$ factor is independent of $r_S$ and is larger than its bare value in the two-valley case (silicon). Comparison with experimental data shows a qualitative agreement with silicon.

PACS: 71.27.+a

Received: 21.10.2002
Revised: 19.11.2002

 English version: Journal of Experimental and Theoretical Physics Letters, 2002, 76:12, 711–715

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