arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1208.0650cond-mat.mes-hall
收藏

空穴-磁通复合费米子可公度性振荡

Hole-flux Composite Fermion Commensurability Oscillations

D. Kamburov, M. Shayegan, L. N. Pfeiffer, K. W. West, K. W. Baldwin

摘要:

我们报道了在GaAs量子阱中的高迁移率二维空穴系统中,在填充因子$ν=1/2$附近观察到空穴-通量复合费米子的可伸缩性振荡,并受到弱的、应变诱导的、单向的周期性势调制.的振荡,这是符合弹道输运的充分自旋极化复合费米子在一个弱的周期性有效磁场,是令人惊讶的强大,并表现出高达三阶最小值。我们提取的弹道平均自由程约为0.2 $μ$ m的空穴通量复合费米子。

英文摘要:

We report the observation of commensurability oscillations of hole-flux composite fermions near filling factor $ν=1/2$ in a high-mobility two-dimensional hole system confined to a GaAs quantum well, and subjected to a weak, strain-induced, unidirectional periodic potential modulation. The oscillations, which are consistent with ballistic transport of fully spin-polarized composite fermions in a weak periodic effective magnetic field, are surprisingly strong and exhibit up to third-order minima. We extract a ballistic mean-free-path of about 0.2 $μ$m for the hole-flux composite fermions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑