CAPACITIVE CONTACTS: MAKING FOUR-POINT CHARACTERIZATIONS WITHOUT OHMIC CONTACTS

Autor:	N. Işık, S. F. Roth, Martin Bichler, Matthew Grayson
Rok vydání:	2007
Předmět:	Materials science Amplitude business.industry Bar (music) Capacitive sensing Bode plot Phase (waves) Optoelectronics Statistical and Nonlinear Physics Point (geometry) Condensed Matter Physics business Ohmic contact
Zdroj:	Scopus-Elsevier
ISSN:	1793-6578 0217-9792
DOI:	10.1142/s0217979207042963
Popis:	Four-point measurements are carried out on a Hall bar using specially designed capacitive contacts, reproducing the transport characteristics Rxx measured using standard ohmic contacts. All Rxx measurements using various combinations of ohmic and capacitive contacts are in quantitative agreement, with a calibrated scaling factor arising because of the device and measurement setup capacitances. Also amplitude and phase measurements represented with the Bode plots for all combinations of ohmic and capacitive contacts are carried out and the results compare favorably with our circuit analysis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7b39914daa17031e08865cc13301c9f https://doi.org/10.1142/s0217979207042963 Zobrazit plný text záznamu