Untiedt, Carlos, Rubio Bollinger, Gabino, Vieira Díaz, Sebastián, Agraït de la Puente, Nicolás
Quantum interference in atomic-sized point contacts
UNTIEDT, C., et al. “Quantum interference in atomic-sized point contacts”. Physical Review B. Vol. 62, No. 15 (15 Oct. 2000). ISSN 1098-0121, pp. 9962-9965
URI: http://hdl.handle.net/10045/25189
DOI: 10.1103/PhysRevB.62.9962
ISSN: 1098-0121 (Print)
Abstract: 
The conductance of atomic-sized metallic point contacts is shown to be strongly voltage dependent due to quantum interference with impurities even in samples with low impurity concentrations. Transmission through these small contacts depends not only on the local atomic structure at the contact but also on the distribution of impurities or defects within a coherence length of the contact. In contrast with other mesoscopic systems we show that transport through atomic contacts is coherent even at room temperature. The use of a scanning tunneling microscope (STM) makes it possible to fabricate one atom contacts of gold whose transmission can be controlled by manipulation of the contact allowing inelastic spectroscopy in such small contacts.
Keywords:Atomic-sized metallic point contacts, Conductance, Quantum interference
American Physical Society
info:eu-repo/semantics/article