arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1311.3554cond-mat.mtrl-sciphysics.pop-phquant-ph
收藏

半导体表面一维结构建模:理论与实验的协同

Modeling 1D structures on semiconductor surfaces: Synergy of theory and experiment

Danny E. P. Vanpoucke

摘要:

原子尺度的纳米线在许多领域引起了人们的极大兴趣。一方面,由于它们的准一维性质,它们可以作为奇异物理学的实验测试平台:Peierls不稳定性,电荷密度波和Luttinger液体行为。另一方面,由于它们的小尺寸,它们对于微电子工业中的未来器件应用以及关于分子电子学的应用是有意义的。这种多功能性使它们成为有趣的生产和研究系统,但它们的大小和生长条件将实验生产和理论建模推向了极限。在这篇综述中,半导体表面上的原子尺度纳米线的建模进行了讨论,侧重于理论和实验之间的相互作用。目前的状态的Pt和Au诱导的Ge(001)上的纳米线的建模工作,指出它们的相似性和差异。最近发现的纳米线系统(Ir,Co,Sr)的Ge(001)表面上也触及。扫描隧道显微镜作为一种工具的理论和实验数据的直接比较的重要性,因为是密度泛函理论作为一种原子模拟方法的权力。很明显,互补的理论和实验研究的优势,需要成功建模的原子纳米线,由于其复杂性。

英文摘要:

Atomic scale nanowires attract enormous interest in a wide range of fields. On the one hand, due to their quasi-one-dimensional nature, they can act as a experimental testbed for exotic physics: Peierls instability, charge density waves, and Luttinger liquid behavior. On the other hand, due to their small size, they are of interest for future device applications in the micro-electronics industry, but also for applications regarding molecular electronics. This versatile nature makes them interesting systems to produce and study, but their size and growth conditions push both experimental production and theoretical modeling to their limits. In this review, modeling of atomic scale nanowires on semiconductor surfaces is discussed focusing on the interplay between theory and experiment. The current state of modeling efforts on Pt- and Au-induced nanowires on Ge(001) is presented, indicating their similarities and differences. Recently discovered nanowire systems (Ir, Co, Sr) on the Ge(001) surface are also touched upon. The importance of scanning tunneling microscopy as a tool for direct comparison of theoretical and experimental data is shown, as is the power of density functional theory as an atomistic simulation approach. It becomes clear that complementary strengths of theoretical and experimental investigations are required for successful modeling of the atomistic nanowires, due to their complexity.

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。

↑