title: Electron Quantization in Broken Atomic Wires.
abstract: We demonstrate using scanning tunneling microscopy and spectroscopy the electron quantization within metallic Au atomic wires self-assembled on a Si(111) surface and segmented by adatom impurities. The local electronic states of wire segments with a length up to 10 nm are investigated as terminated by two neighboring Si adatoms. One-dimensional (1D) quantum well states are well resolved by their spatial distributions and the inverse-length-square dependence in their energies. The quantization also results in the quantum oscillation of the conductance at Fermi level. The present approach provides a new and convenient platform to investigate 1D quantum phenomena with atomic precision.
authors.affiliation: Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), 77 Cheongam-Ro, Pohang 790-784, Korea and Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea.
authors.forename: Eui Hwan
authors.initials: EH
authors.lastname: Do
authors.affiliation: Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), 77 Cheongam-Ro, Pohang 790-784, Korea and Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea.
authors.forename: Han Woong
authors.initials: HW
authors.lastname: Yeom