DIFFUSION BARRIER LAYERS FOR OHMIC CONTACTS TO GaAs D.A. ALLAN, J. HERNIMAN, M.J. GILBERT, P.J. O'SULLIVAN, M.P. GRIMSHAW et A.E. STATION-BEVAN J. Phys. Colloques, 49 C4 (1988) C4-427-C4-430 DOI: 10.1051/jphyscol:1988490