منابع مشابه
Electron Standing Wave Formation in Atomic Wires
Using the Landauer formulation of transport theory and tight binding models of the electronic structure, we study electron transport through atomic wires that form 1D constrictions between pairs of metallic nano-contacts. Our results are interpreted in terms of electron standing waves formed in the atomic wires due to interference of electron waves reflected at the ends of the atomic constricti...
متن کاملElectron Quantization in Broken Atomic Wires.
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 thei...
متن کاملElectron transport and phonons in atomic wires
A scanning tunnelling microscope (STM) at low temperatures is used to fabricate and measure the electronic transport properties of atomic wires up to 7 atoms in length. We observe that the conductance of these wires, which at zero bias voltage is 2e=h, as corresponds to ballistic electron transport through a single conductance quantum channel, drops sharply at a well-defined voltage due to the ...
متن کاملAtomic wires and their electronic properties
Atomic wire electronics are considered, where the band structure and the resultant Fermi energy are designed by manipulating the lattice constant. Using the tight-binding theory with universal parameters, it is shown that Si wires and arrays are metallic, Mg wires are insulating, and Mg arrays have metallic and insulating phases for infinitely large, isolated cases. Structures are of finite siz...
متن کاملElectrochemical properties of atomic-scale metal wires
We have fabricated atomic-scale metal wires with quantized conductance in electrolytes and studied double layer charging, anionic adsorption and surface stress effects on the quantum transport in the wires. In the double layer charging regime, the conductance changes linearly with the potential, which can be attributed to a change in the amount of electron spill-out of the wire. A large change ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2004
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.70.052705