Superconducting Silicon

 

 

Contact: Francesca Chiodi

In Silicon as well as in diamond, the introduction of a very high concentration of Boron leads to superconductivity. Given the elevated necessary doping levels, our group is the only one to master the synthesis of superconducting silicon. The superconducting transition temperature Tc can be adjusted by the boron concentration to reach a value as high as 0.5 K (left hand panel), but saturates when the concentration crosses a threshold corresponding to strain relaxation by the formation of two distinct doping layers (right hand panel).

 

 

 

People

  • Francesca Chiodi
  • Dominique Débarre
  • Géraldine Hallais

Collaborations

  • CEA Grenoble (Grenoble Quantum Silicon)
  • Institut Néel (Magnetisme et Supraconductivité, Semiconducteurs à large bande interdite)
  • Institut des Nanotechnologies de Lyon
     

Fundings

  • SIRTEQ (2020)
  • ANR SUNISIDEUP (2018)
  • ANR JCJC SUPERR (2016)
  • Labex Nanosaclay SIRE (2016)
  • Triangle de la Physique 'DownTo40' (2014)
  • ANR SuSi (2008)