Experimental determination of the (H, T) phase diagram of a superconducting network

B. Pannetier , J. Chaussy , R. Rammal

We have measured the resistive critical temperature Tc of a regular two dimensional network of superconducting indium at low magnetic fields. We find Tc oscillations with a period equal to one quantum flux Φ0 = hc/2e per lattice cell. Well-defined structures also appear at the rational values of the reduced flux Φ/Φ0 = 1/3 and 2/3. These results are compared with theoretical predictions for the (H, T) critical line of the studied network.

Mots clés: fluctuations in superconductors; indium; superconducting critical field; superconducting transition temperature; type I superconductors; In; critical field; phase diagram; superconducting network; resistive critical temperature; oscillations; quantum flux; critical line

Domaines: Articles anciens

B. Pannetier, J. Chaussy, R. Rammal. Experimental determination of the (H, T) phase diagram of a superconducting network. Journal de Physique Lettres, 1983, 44 (20), pp.853-858. ⟨10.1051/jphyslet:019830044020085300⟩. ⟨jpa-00232273⟩