PL EN


Preferences help
enabled [disable] Abstract
Number of results
1992 | 82 | 4 | 539-550
Article title

Point-Contact Spectroscopy

Authors
Content
Title variants
Languages of publication
EN
Abstracts
EN
In a small metallic constriction ("point contact") the transport of electrons is ballistic. The applied voltage V tunes a well-defined non-equilibrium energy eV of electrons. The nonlinear current-voltage characteristics can be used to perform energy-resolved spectroscopy of the inelastic scattering of electrons with elementary excitations in metal (e.g. phonons, magnons, crystal-field levels, paramagnetic impurities). The basic elements of the point--contact method and its applications will be discussed. In recent point-contact experiments the observed phenomena (weak localization, resistance fluctuations) need a description that goes beyond the classical Boltzmann approach of electronic transport in a point contact. In analogy to observed effects in the diffusive transport in mesoscopic systems, these phenomena are explained by considering quantum-interference effects in the ballistic transport near the contact region related to the wave character of the electrons.
Keywords
EN
Year
Volume
82
Issue
4
Pages
539-550
Physical description
Dates
published
1992-10
References
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv82z402kz
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.