Oncel Nuri, van Houselt Arie, Huijben Jeroen, Hallbäck Ann-Sofie, Gurlu Oguzhan, Zandvliet Harold J W, Poelsema Bene
Solid State Physics, MESA+ Research Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
Phys Rev Lett. 2005 Sep 9;95(11):116801. doi: 10.1103/PhysRevLett.95.116801. Epub 2005 Sep 6.
The existence of one-dimensional (1D) electronic states between self-organized Pt nanowires spaced 1.6 or 2.4 nm apart on a Ge(001) surface is revealed by low-temperature scanning tunneling microscopy. These perfectly straight Pt nanowires act as barriers for a surface state (located just below the Fermi level) of the underlying terrace. The energy positions of the 1D electronic states are in good agreement with the energy levels of a quantum particle in a well. Spatial maps of the differential conductivity of the 1D electronic states conclusively reveal that these states are exclusively present in the troughs between the Pt nanowires.
低温扫描隧道显微镜揭示了在Ge(001)表面上间距为1.6或2.4纳米的自组织铂纳米线之间一维（1D）电子态的存在。这些完美笔直的铂纳米线对下层平台的表面态（位于费米能级下方）起到了屏障作用。一维电子态的能量位置与势阱中量子粒子的能级高度吻合。一维电子态微分电导率的空间图确凿地表明，这些态仅存在于铂纳米线之间的凹槽中。
