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Fabrication of submicrometre buried gold - palladium wires on using electron beam lithography

V Rousset-+, S Itoua-+, C Joachim-+, F Tsobnang++, B Rousset§ and H H Pham§

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A process is presented to fabricate a coplanar buried metal - - metal junction on the surface. The surface is etched with reactive ion etching (RIE) through a PMMA mask where the junction patterns have been defined using the e-beam technique. The buried AuPd metallic wires of the junction, 200 nm in width and 10 nm in thickness, are fabricated by the lift-off technique. After the RIE step, the difficulties of reaching an electrode separation in the 40 nm range on are also discussed.


PACS

81.16.Nd Nanolithography

81.65.Cf Surface cleaning, etching, patterning

Subjects

Surfaces, interfaces and thin films

Nanoscale science and low-D systems

Dates

Issue 2 (June 1996)

Received 19 October 1994, accepted for publication 12 September 1995



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