ENHANCED SUPERCONDUCTIVITY IN LAYERED METALLIC FILMS

被引:128
作者
STRONGIN, M
KAMMERER, OF
CROW, JE
PARKS, RD
DOUGLASS, DH
JENSEN, MA
机构
[1] Brookhaven National Laboratory, Upton
[2] Department of Physics and Astronomy, University of Rochester, Rochester
[3] Center for Low Temperature Physics, Queens College of the City University of New York, Flushing
[4] Department of Physics, University of Pennsylvania, Philadelphia
关键词
D O I
10.1103/PhysRevLett.21.1320
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have observed large increases in the transition temperature Tc of thin, quenched composite films consisting of alternating layers of dissimilar metals. We estimate the regions of the film which experience the greatest increase to be within a few monolayers of the metal-vacuum or metal-metal surfaces. A possible explanation for the increased Tc's is the shift in the electron-phonon coupling to larger values due to the lowering of the phonon frequencies. © 1968 The American Physical Society.
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页码:1320 / +
页数:1
相关论文
共 29 条
[1]   ENHANCEMENT OF SUPERCONDUCTIVITY IN METAL FILMS [J].
ABELES, B ;
COHEN, RW ;
CULLEN, GW .
PHYSICAL REVIEW LETTERS, 1966, 17 (12) :632-&
[2]   SUPERCONDUCTIVITY IN EVAPORATED TUNGSTEN FILMS [J].
BASAVAIAH, S ;
POLLACK, SR .
APPLIED PHYSICS LETTERS, 1968, 12 (08) :259-+
[3]   SUPERCONDUCTIVITY IN FILMS OF BETA TUNGSTEN AND OTHER TRANSITION METALS [J].
BOND, WL ;
COOPER, AS ;
ANDRES, K ;
HULL, GW ;
GEBALLE, TH ;
MATTHIAS, BT .
PHYSICAL REVIEW LETTERS, 1965, 15 (06) :260-&
[4]   *SUPRALEITUNG UND WIDERSTAND VON ZINN MIT GITTERSTORUNGEN .2. [J].
BUCKEL, W ;
HILSCH, R .
ZEITSCHRIFT FUR PHYSIK, 1952, 131 (03) :420-442
[5]   EINFLUSS DER KONDENSATION BEI TIEFEN TEMPERATUREN AUF DEN ELEKTRISCHEN WIDERSTAND UND DIE SUPRALEITUNG FUR VERSCHIEDENE METALLE [J].
BUCKEL, W ;
HILSCH, R .
ZEITSCHRIFT FUR PHYSIK, 1954, 138 (02) :109-120
[6]   FACE-CENTERED-CUBIC TUNGSTEN FILMS OBTAINED BY [J].
CHOPRA, KL ;
RANDLETT, MR ;
DUFF, RH .
APPLIED PHYSICS LETTERS, 1966, 9 (11) :402-&
[7]   SUPERCONDUCTIVE PAIRING ACROSS ELECTRON BARRIERS [J].
COHEN, MH ;
DOUGLASS, DH .
PHYSICAL REVIEW LETTERS, 1967, 19 (03) :118-&
[8]  
DICKEY JM, PRIVATE COMMUNICATIO
[9]  
DICKEY JM, TO BE PUBLISHED
[10]  
FRESCHETTE VD, 1958, NONCRYSTALLINE SO ED