arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.02951cond-mat.mes-hall
收藏

InSb二维电子气中的量子点接触

Gate-defined Quantum Point Contact in an InSb Two-dimensional Electron Gas

Zijin Lei, Christian A. Lehner, Erik Cheah, Christopher Mittag, Matija Karalic, Werner Wegscheider, Klaus Ensslin, Thomas Ihn

摘要:

我们研究了高迁移率InSb二维电子气中静电量子点接触。良好定义的电导平台进行观察,量子点接触的子带结构提取有限偏置测量。塞曼分裂是在面内和面外磁场中测量的。我们找到平面内g因子$|g_{\parallel}^* | \approx$ 40。测得的面外g因子为$|g_{\perp}^* | \approx$ 50,接近于本体中的g因子。

英文摘要:

We investigate an electrostatically defined quantum point contact in a high-mobility InSb two-dimensional electron gas. Well-defined conductance plateaus are observed, and the subband structure of the quantum point contact is extracted from finite-bias measurements. The Zeeman splitting is measured in both in-plane and out-of-plane magnetic fields. We find an in-plane g factor $|g_{\parallel}^* | \approx$ 40. The out-of-plane g factor is measured to be $|g_{\perp}^* | \approx$ 50, which is close to the g factor in the bulk.

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。

↑