Open AccessTHE PROXIMITY EFFECT BETWEEN A NONSIMPLE METAL WITH-U CENTERS AND A BCS SUPERCONDUCTOR (Ⅱ)
Author(s) -
TANG HUI,
ZHANG LI-YUAN
Publication year - 1985
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.34.97
Subject(s) - superconductivity , condensed matter physics , bcs theory , density of states , materials science , transition temperature , range (aeronautics) , superconducting transition temperature , physics , proximity effect (electron beam lithography) , thin film , metal , quantum mechanics , nanotechnology , pairing , composite material , electron beam lithography , layer (electronics) , resist , metallurgy
According to the model of the superconducting proximity effect between a nonsimple metal thin film with negative U centers and a thin film of BCS superconductor, we have discussed the gap functions, the electronic density of states and the transition temperature Tc varying with different parameters. Results show that a small density of states due to the -U centers exists in the region of "energy gap". The transition temperature of this kind of sandwich is probably higher than the Tc of the bulk BCS superconductor within certain range of parameters.