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Grain boundary weak link in a-b plane in MgB2 film

E. Stepantsov ; M. Tarasov ; M. Naito ; A. Tsukada ; Dag Winkler (Institutionen för mikroteknologi och nanovetenskap)
Applied Physics Letters (00036951 (ISSN)). Vol. 89 (2006), 21,
[Artikel, refereegranskad vetenskaplig]

The authors have fabricated the Mg B2 bridges 850-6000 nm in width on bicrystal (111) MgO substrates with in-plane grain boundaries of the two types: 13°13° 〈110〉 and 13°13° 〈112〉. Annealing in oxygen of the films on 〈110〉 bicrystal substrates leads to a systematic decrease of critical current, a widening of the transition temperature width, and an improvement of the shape of IV curve that finally looks more like a Josephson junction. They have measured a response of such samples to the microwave radiation at 110 GHz with the voltage amplitude up to 0.5 mV.

Denna post skapades 2009-12-07. Senast ändrad 2014-11-10.
CPL Pubid: 102931


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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap


Elektroteknik och elektronik

Chalmers infrastruktur