Nanostructures made from superconducting boron doped diamond

Soumen Mandal (1) , Cécile Naud (1) , Oliver A. Williams , Etienne Bustarret (2) , Franck Omnès (2) , Pierre Rodière (3) , Tristan Meunier (1) , Laurent Saminadayar (4) , Christopher Bäuerle (1)

1 NEEL - QuantECA - Circuits électroniques quantiques Alpes
2 NEEL - SC2G - Semi-conducteurs à large bande interdite
3 NEEL - MagSup - Magnétisme et Supraconductivité
4 NEEL - TPS - Thermodynamique et biophysique des petits systèmes

We report on the transport properties of nanostructures made from boron-doped superconducting diamond. Starting from nanocrystalline superconducting boron-doped diamond thin films, grown by Chemical Vapor Deposition, we pattern by electron-beam lithography devices with dimensions in the nanometer range. We show that even for such small devices, the superconducting properties of the material are well preserved: for wires of width less than $100\, nm$, we measure critical temperatures in the Kelvin range and critical field in the Tesla range.

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Supraconductivité [cond-mat.supr-con]

Soumen Mandal, Cécile Naud, Oliver A. Williams, Etienne Bustarret, Franck Omnès, et al.. Nanostructures made from superconducting boron doped diamond. Nanotechnology, 2010, 21, pp.195303. ⟨10.1088/0957-4484/21/19/195303⟩. ⟨hal-00993991⟩