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TT: Fachverband Tiefe Temperaturen

TT 5: Postersession Superconductivity: Materials - Fabrication and Properties

TT 5.26: Poster

Monday, March 23, 2009, 13:00–16:45, P1A

Superconductivity at the interfaces of oriented graphite crystalline regions? — Jose Barzola-Quiquia and •Pablo Esquinazi — Division of Superconductivity and Magnetism, University of Leipzig, D-04103 Leipzig

Magnetotransport measurements in bulk graphite as well as in mesoscopic multigraphene samples show a behaviour compatible with granular superconductivity with critical temperatures above 20 K [1]. Transmission electron microscope characterization and the thickness dependence of the transport behaviour suggest that the superconducting regions are located at the interfaces between crystalline graphite regions.

[1] P. Esquinazi et al., Phys. Rev. B 78, 134516 (2008).