Oscillations of the superconducting transition temperature in aluminum films

Sixl, H.

doi:10.1016/0375-9601(75)90090-0

Cited by 18 publications

(2 citation statements)

References 16 publications

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“…Finally, only feebly marked oscillations of the normal resistance are expected in antiphase to the T~ oscillations. Therefore the experimental observations concerning the AI/SiO system are described with only one do~ainant 4 mechanism, as was proposed in an earlier paper. Because of the initial and final increase and the magnitude of the effect, charging as well as surface phonon alteration during SiO coating of the A1 films are not the dominant effects.…”

Section: Discussionmentioning

confidence: 94%

Quantum oscillations of the superconducting transition temperature in Al-SiO systems

1980

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We report measurements on the superconducting transition temperature Tc and the normal resistance R, of quench-condensed pure and granular aluminum films. The changes of the superconducting transition temperature are characteristically dependent on the coating film thickness and are inversely dependent on the Al film thickness. The observed oscillations of the transition temperature are interpreted in the framework of the theory of quantum oscillations developed by Kagan and Dubovskii.

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Section: Discussionmentioning

confidence: 94%

Quantum oscillations of the superconducting transition temperature in Al-SiO systems

1980

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“…In some cases oscillations in the superconducting transition temperature T c of superconducting films with a coating (Nb-SiO 2 , Mo-C, Pb-Sb, Al-SiO etc.) have been observed [6][7][8][9] as a function of the thickness of the coating.…”

Section: Introductionmentioning

confidence: 99%

Interface superconductivity – Possible origin of high critical temperature in layered superconductors

Tinchev

2010

Physica C: Superconductivity

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Superconducting transition temperatures T c of the YBCO film surface and of the YBCO film/substrate interface were measured inductively. It was observed that the interface-T c is always higher then the surface -T c . However deposition of silver over-layer enhances the superconducting transition temperatures. This observation was confirmed by four-point resistance measurements. In the annealed YBCO/Ag bilayers magnetic properties of the interface were observed. We believe that such phenomena are a common feature of layered systems. This two dimensional structure reminds the layered microstructure of the high-temperature superconductors and one can suppose that covering of the superconducting layer by non-superconducting layer is a condition for obtaining high critical temperatures in general.

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Density of States in Multilayer Sandwiches

Dubovskii

1981

Physica Status Solidi (b)

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The density of states of finite metal-semimetal systems is considered in the case of boundary conditions that assure the damping of electronic states a t infinity. The density of states of the transition region metal-semimetal is investigated which is found to be strongly dependent on the shape of the transition layer. Special a.ttention is paid to the case when in one part of the system, in the metal, the coherence of the motion of the electron is broken, while in the other part, in the semimetal, the electron moves coherently. Under this condition, the oscillations of the density of states of systems consisting of a metallic film covered on both sides with the semimetal, and systems consisting of two metallic films with a semimetallic interlayer are considered. Within the model described, one can understand the experimentally observed behaviour of To (the temperature of the superconducting transition) a t small thicknesses of the semimetallic layer. PaCCMaTpHBaeTCH IIJIOTHOCTL COCTOFIHHH KOHeWIbIX CHCTeM MeTaJlJl-nOJIyMeTaJIJI npH rPaHHsHbIX yCJIOBkl%IX, 06eCIIesklBaIOIqHX 3aTyXaHkle 3JIeKTPOHHbIX COCTOHHHH Ha 6ec~o-He9HOCTII. MCCJIe,IIyeTCH IIJlOTHOCTb COCTOHHHfi IIepeXOAHOH 06JIaCTPi MeTaJU-IIOJIy-BHklMaHHe YHeJleHO paCCMOTpeHklI0 CnysaH, KOrHa B OEHOH gaCTH CHCTeMbI, B MeTaJIJIe, 3JIeKTPOH , QBkllKeTCH KOrepeHTHO. npkl 3TOM YCJIOBPiX paCCMOTpeHb1 OC4klJIJIHlJHH IIJIOT-MeTann, KoTopaH o~a3anacb cHmbHo 3 a~~c~w e f i OT i#opMbi nepexonHoro CJIOR. Oco6oe KorepeHTHocTb ABklmeHm a n e~~p o~a HapymeHa, a B HpyroH qacTH, B noayMeTame, HOCTH COCTORHHH cncTeM, COCTORI~LIX ~3 MeTammsecKoH nneHm, noKpbmoH c o 6 e~x CTOPOH nonyMeTamnoM, H cmTeM, COCTORWE~X 143 ~B Y X MeTanamsecmx nneHoK c nony-MeTannmsecKoH npocnoHKoH. B onmaimoH MoAem MoxeT LIT^ IIOHHTO ~aGnmnae~oe Ha s~c n e p~~e~~e noseneme T, (TeMnepaTypbI cBepxnpoBomuero nepexona) n p~ MamIx Tomumax nonyMeTanmisecHoro CJIOR. l) Moscow 123 182, USSR.

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Oscillations of the superconducting transition temperature in aluminum films

Cited by 18 publications

References 16 publications

Quantum oscillations of the superconducting transition temperature in Al-SiO systems

Quantum oscillations of the superconducting transition temperature in Al-SiO systems

Interface superconductivity – Possible origin of high critical temperature in layered superconductors

Density of States in Multilayer Sandwiches

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