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Related papers: Proximity effect in ultrathin Pb/Ag multilayers wi…

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We have fabricated quasi-two-dimensional arrays of nano-scale Pb grains coupled by an overlayer of Ag grains. Their temperature dependent resistive transitions follow predictions for an array of mesoscopic…

Superconductivity · Physics 2012-08-27 Taejoon Kouh , J. M. Valles,

We fabricated three-dimensional disordered Pb-Cu granular structures, with various metal compositions. The typical grain size of both metals is smaller than the superconductor and normal metal coherence lengths, thus satisfying the Cooper…

Superconductivity · Physics 2009-11-11 I. Sternfeld , V. Shelukhin , A. Tsukernik , M. Karpovski , A. Gerber , A. Palevski

Recent experimental data (H. Nam et al., Phys. Rev. B 100, 094512 (2019)) of critical temperature and gaps measured on superconductor/normal metal heterostructure Pb/Ag, epitaxially grown, shown a interesting not usual behaviour. The…

Superconductivity · Physics 2020-01-29 G. A. Ummarino

The experimental critical temperature of systems of nanoparticles superconducting (Pb) and normal (Ag, Cu and Al) with a random distribution and sizes less than their respective coherence lengths, is governed by proximity effect as the…

Superconductivity · Physics 2023-05-15 G. A. Ummarino

Proximity effect facilitates the penetration of Cooper pairs that permits superconductivity in normal metal, offerring a promising approach to turn heterogeneous materials into superconducting and develop exceptional quantum phenomena.…

We have investigated the superconducting critical temperatures of Nb/Au/CoFe trilayers as a function of Au and CoFe thicknesses. Without the CoFe layer the superconducting critical temperatures of Nb/Au bilayers as a function of Au…

Superconductivity · Physics 2009-11-11 Jinho Kim , Yong-Joo Doh , K. Char , Hyeonjin Doh , Han-Yong Choi

We present transport and tunneling measurements of Pb-Ag bilayers with thicknesses, $d_{Pb}$ and $d_{Ag}$, that are much less than the superconducting coherence length. The transition temperature, $T_c$, and energy gap, $\Delta$, in the…

Superconductivity · Physics 2012-08-27 Zhenyi Long , M. D. Stewart, , Taejoon Kouh , James M. Valles

We examined the proximity effect in granular films made of Pb, a superconductor, and Ni, a ferromagnet, with various compositions. Slow decay of the critical temperature as a function of the relative volume concentration of Ni per sample…

Superconductivity · Physics 2018-01-30 Hadar Greener , Victor Shelukhin , Michael Karpovski , Moshe Goldstein , Alexander Palevski

We present a combined experimental and theoretical study of the proximity effect in an atomic-scale controlled junction between two different superconductors. Elaborated on a Si(111) surface, the junction comprises a Pb nanocrystal with an…

Superconductivity · Physics 2014-03-19 V. Cherkez , J. C. Cuevas , C. Brun , T. Cren , G. Menard , F. Debontridder , V. Stolyarov , D. Roditchev

In this letter, we have studied the effects of proximity of a superconductor to a normal metal. The system, represented by a bilayer attractive Hubbard model, is investigated using layer-dynamical mean field theory and iterated perturbation…

Superconductivity · Physics 2014-04-03 Naushad Ahmad Kamar , N. S. Vidhyadhiraja

The temperature evolution of the proximity effect in Au/La$_{2-x}$Sr$_x$CuO$_4$ and La$_{1.55}$Sr$_{0.45}$CuO$_4$/La$_{2-x}$Sr$_x$CuO$_4$ bilayers was investigated using scanning tunneling microscopy. Proximity induced gaps, centered at the…

Superconductivity · Physics 2009-11-09 Ofer Yuli , Itay Asulin , Yoav Kalcheim , Gad Koren , Oded Millo

052<p type="texpara" tag="Body Text" et="abstract" >The superconducting proximity effect is measured in sandwiches of thin Pb films and the alkali metals Cs, Rb, K and Na. The $T_{c}$-dependence provides information about the interface…

Superconductivity · Physics 2009-11-10 D. Garrett , M. Zhang , G. Bergmann

We report on the study of electron transport in the oxide heterostructures with superconductor/magnetic matter (S/M) interfaces where anomaly large penetration of superconducting correlations in magnetic matter (proximity effect) is…

We calculate the contribution of superconducting fluctuations to the mesoscopic persistent current of an ensemble of rings, each made of a superconducting layer in contact with a normal one, in the Cooper limit. The superconducting…

Superconductivity · Physics 2015-05-30 O. Entin-Wohlman , H. Bary-Soroker , A. Aharony , Y. Imry , J. G. E. Harris

Spin-singlet Cooper pairs consisting of two electrons with opposite spins cannot directly penetrate from a superconductor to a half-metal (fully spin polarized ferromagnets) which blocks the superconducting proximity effect between these…

Superconductivity · Physics 2019-09-04 Zh. Devizorova , S. Mironov

The ability to induce a sizable gap in the excitation spectrum of a normal layer placed in contact with a conventional superconductor has become increasingly important in recent years in the context of engineering a topological…

Mesoscale and Nanoscale Physics · Physics 2016-07-06 Christopher R. Reeg , Dmitrii L. Maslov

The superconducting proximity effect is investigated for SN double layers in a regime where the resulting transition temperature T_{c} does not depend on the mean free paths of the films and, within limits, not on the transparency of the…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 M. Zhang , G. Tateishi , G. Bergmann

A theory of the proximity effect in normal metal - multiband superconductor hybrid structures is formulated within the quasiclassical Green's function formalism. It is shown that the existence of multiple superconducting bands manifests…

Superconductivity · Physics 2009-11-10 A. Brinkman , A. A. Golubov , M. Yu. Kupriyanov

Single-domain, epitaxially-grown Nb(110)/Au(111)/Nb(110) trilayers are studied in order to elucidate the superconducting proximity effect in the Au(111) layer. The critical current density, superconducting coherence length, and…

Superconductivity · Physics 2016-02-19 Hiroki Yamazaki , Nic Shannon , Hidenori Takagi

Motivated by the recent experiment in multilayered cuprate superconductors reporting the enhancement of antiferromagnetic order below the superconducting transition temperature, we study the proximity effect of the antiferromagnetic…

Strongly Correlated Electrons · Physics 2012-05-24 Hiroyuki Yoshizumi , Takao Morinari , Takami Tohyama
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