UAM | UAM_Biblioteca | Unified search engine | Scientific Production Portal | UAM Research Data Repository
Biblos-e Archivo
    • español
    • English
  • English 
    • español
    • English
  • Log in
JavaScript is disabled for your browser. Some features of this site may not work without it.

Search Biblos-e Archivo

Advanced Search

Browse

All of Biblos-e ArchivoCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsFacultiesThis CollectionBy Issue DateAuthorsTitlesSubjectsFaculties

My Account

Log inRegister

Statistics

View Usage Statistics

Help

Information about Biblos-e ArchivoI want to submit my workFrequently Asked Questions

UAM_Biblioteca

View Item 
  •   Biblos-e Archivo
  • 1 - Producción científica en acceso abierto de la UAM
  • Producción científica en acceso abierto de la UAM
  • View Item
  •   Biblos-e Archivo
  • 1 - Producción científica en acceso abierto de la UAM
  • Producción científica en acceso abierto de la UAM
  • View Item

Dynamic bonding of metallic nanocontacts: Insights from experiments and atomistic simulations

Author
Fernández, M. A.; Sabater, C.; Dednam, W.; Palacios Burgos, Juan Joséuntranslated; Calvo, M. R.; Untiedt, C.; Caturla, M. J.
Entity
UAM. Departamento de Física de la Materia Condensada
Publisher
American Physical Society
Date
2016-02-26
Citation
10.1103/PhysRevB.93.085437
Physical Review B - Condensed Matter and Materials Physics 93.8 (2016): 085437
 
 
 
ISSN
2469-9950 (print); 2469-9969 (online)
DOI
10.1103/PhysRevB.93.085437
Funded by
W. Dednam thanks Dr. A. E. Botha for helpful discussions and acknowledges support from the National Research Foundation of South Africa through the Scarce Skills Masters scholarship funding programme (Grant Unique Number 92138). This work is supported by the Generalitat Valenciana through Grant Reference PROMETEO2012/011 and MINECO under Grant No. FIS2013-47328, by European Union structural funds and the Comunidad de Madrid Programs S2013/MIT-3007 and P2013/MIT-2850. This work is also part of the research programme of the Foundation for Fundamental Research on Matter (FOM), which is financially supported by the Netherlands Organisation for Scientific Research (NWO)
Project
Gobierno de España. FIS2013-47328; Comunidad de Madrid. S2013/MIT-3007/MAD2D; Comunidad de Madrid. S2013/MIT-2850/NANOFRONTMAG-CM
Editor's Version
http://dx.doi.org/10.1103/PhysRevB.93.085437
Subjects
Metallic nanocontacts; Atomistic simulations; Física
URI
http://hdl.handle.net/10486/677687
Rights
© 2016 American Physical Society

Abstract

The conductance across an atomically narrow metallic contact can be measured by using scanning tunneling microscopy. In certain situations, a jump in the conductance is observed right at the point of contact between the tip and the surface, which is known as "jump to contact" (JC). Such behavior provides a way to explore, at a fundamental level, how bonding between metallic atoms occurs dynamically. This phenomenon depends not only on the type of metal but also on the geometry of the two electrodes. For example, while some authors always find JC when approaching two atomically sharp tips of Cu, others find that a smooth transition occurs when approaching a Cu tip to an adatom on a flat surface of Cu. In an attempt to show that all these results are consistent, we make use of atomistic simulations; in particular, classical molecular dynamics together with density functional theory transport calculations to explore a number of possible scenarios. Simulations are performed for two different materials: Cu and Au in a [100] crystal orientation and at a temperature of 4.2 K. These simulations allow us to study the contribution of short- and long-range interactions to the process of bonding between metallic atoms, as well as to compare directly with experimental measurements of conductance, giving a plausible explanation for the different experimental observations. Moreover, we show a correlation between the cohesive energy of the metal, its Young's modulus, and the frequency of occurrence of a jump to contact
Show full item record

Files in this item

Thumbnail
Name
dynamic_fernandez_pr_2016.pdf
Size
2.431Mb
Format
PDF

Refworks Export

Google™ Scholar:Fernández, M. A. - Sabater, C. - Dednam, W. - Palacios Burgos, Juan José - Calvo, M. R. - Untiedt, C. - Caturla, M. J.

This item appears in the following Collection(s)

  • Producción científica en acceso abierto de la UAM [17721]

Related items

Showing items related by title, author, creator and subject.

  • Directional bonding explains the high conductance of atomic contacts in bcc metals 

    Dednam, W.; Sabater, C.; Calvo, M. R.; Untiedt, C.; Palacios Burgos, Juan JoséAutoridad UAM; Botha, A. E.; Caturla, M. J.
    2020-04-20
  • Mechanical annealing of metallic electrodes at the atomic scale 

    Sabater, C.; Untiedt, C.; Palacios Burgos, Juan JoséAutoridad UAM; Caturla, M. J.
    2012-05-14
  • Understanding the structure of the first atomic contact in gold 

    Sabater, Carlos; Caturla, María José; Palacios Burgos, Juan JoséAutoridad UAM; Untiedt, Carlos
    2013-05-29
All the documents from Biblos-e Archivo are protected by copyrights. Some rights reserved.
Universidad Autónoma de Madrid. Biblioteca
Contact Us | Send Feedback
We are onFacebookCanal BiblosYouTubeTwitterPinterestWhatsappInstagram

Declaración de accesibilidad

 

 

All the documents from Biblos-e Archivo are protected by copyrights. Some rights reserved.
Universidad Autónoma de Madrid. Biblioteca
Contact Us | Send Feedback
We are onFacebookCanal BiblosYouTubeTwitterPinterestWhatsappInstagram

Declaración de accesibilidad