arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1311.7652cond-mat.mes-hall
收藏

原子力显微镜纳米光刻制备的石墨烯量子点的输运谱

Transport Spectroscopy of a Graphene Quantum Dot Fabricated by Atomic Force Microscope Nanolithography

R. K. Puddy, C. J. Chua, M. R. Buitelaar

摘要:

我们报道了用原子力显微镜纳米光刻技术制备的石墨烯量子点的低温输运谱。原子力显微镜出色的空间分辨率使我们能够可靠地制造长度小于15 nm的短收缩量子点。输运测量表明,该器件是由一个单一的量子点在一个宽的门范围内占主导地位。通过施加面内磁场研究了量子点的电子自旋系统。结果与Lande g因子2一致,但没有观察到规则的自旋填充序列,很可能是由于无序。

英文摘要:

We report low-temperature transport spectroscopy of a graphene quantum dot fabricated by atomic force microscope nanolithography. The excellent spatial resolution of the atomic force microscope allows us to reliably fabricate quantum dots with short constrictions of less than 15 nm in length. Transport measurements demonstrate that the device is dominated by a single quantum dot over a wide gate range. The electron spin system of the quantum dot is investigated by applying an in-plane magnetic field. The results are consistent with a Lande g-factor of 2 but no regular spin filling sequence is observed, most likely due to disorder.

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。

↑