Jump to ContentJump to Main Navigation
Introduction to Scanning Tunneling MicroscopySecond Edition$
Users without a subscription are not able to see the full content.

C. Julian Chen

Print publication date: 2007

Print ISBN-13: 9780199211500

Published to Oxford Scholarship Online: September 2007

DOI: 10.1093/acprof:oso/9780199211500.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 25 January 2021

Atomic Forces and Tunneling

Atomic Forces and Tunneling

Chapter:
(p.123) Chapter 5 Atomic Forces and Tunneling
Source:
Introduction to Scanning Tunneling Microscopy
Author(s):

C. Julian Chen

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199211500.003.0005

This chapter presents a unified theory of tunneling phenomenon and covalent bond force, as a result of the similarity between the Bardeen theory of tunneling and the Herring-Landau theory of the covalent bond. Three general theoretical treatments are presented, which show that tunneling conductance is proportional to the square of the covalent bond interaction energy, or equivalently, the square of covalent bond force. The constant of proportionality is related to the electronic properties of the materials. For the case of a metal tip and a metal sample, an explicit equation contains only measurable physical quantities is derived. Several experimental verifications are presented. The equivalence of covalent bond energy and tunneling conductance provides a theoretical explanation of the threshold resistance observed in atom-manipulation experiments, and points to a method of predicting the threshold resistance for atom manipulation.

Keywords:   covalent bond energy, covalent bond force, tunneling conductance, tunneling resistance, atom manipulation, threshold resistance, principle of equivalence

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .