Abstract
An analytic solution of the current distribution in a two-dimensional electron gas (2D EG) near an abrupt variation in the conductance properties is given. This solution is shown to explain the approximate quantization of the two-terminal resistance of a 2D EG at values of h/${\mathrm{ie}}^{2}$. The difference between the two-terminal resistance and the Hall resistance is shown to be determined by an interplay of contact and 2D EG properties, and is argued to be of the order of ${10}^{\mathrm{\ensuremath{-}}6}$ times the Hall resistance or less, for Au-Ge-Ni and Sn contacts. Measurements in agreement with this prediction are presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
