Abstract
We use the Takahashi-Tachiki eigenfunction expansion of the integral equation of de Gennes to calculate the transition temperature of a metallic superlattice in the dirty limit. Application of the theory to the data of Banerjee et al. on the Nb/Cu system yields excellent agreement provided one suppresses the transition temperature of the Nb layers to correspond to that of disordered bulk Nb as discussed by Park and Geballe. It is argued that superlattices studies allow one to study thin film superconductors without the complications introduced by lower (2D) dimensionality and the associated partial breakdown of screening.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1003-1005 |
| Number of pages | 3 |
| Journal | Solid State Communications |
| Volume | 67 |
| Issue number | 10 |
| DOIs | |
| State | Published - Sep 1988 |
Funding
proximationfit s that data for d > 500A but falls well one may then accesstheimportancoefthe strictly2D abovet hedata for smallerv alueso ld. Likewise,i n our effects. formalismit is critical to properlyt reatt he co summ- ation, equation(9 ). Second,i f we do not allow pã nd p, to increasew hend becomessm allert hanthe respec-NorthwesterMn aterialsR esearchC enteru nderNSF AcknowledgemenTtsh-i-s work was supportebdy the tive meanf reep ath,o ur fit is still accuratefo r d _> 500 Grant DMR 85-20280a nd by NSF Grant DMR 86- and d < 20A but falls below the data for intermediate 02857. values.F inally, the fit is not criticallyd ependenotn
ASJC Scopus subject areas
- General Chemistry
- Condensed Matter Physics
- Materials Chemistry