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Ba(Fe1-xCox)2As2 superconducting thin films have been grown on SrTiO3, (La,Sr)(Al,Ta)O3, LaAlO3 and YAlO3 (YAO) single crystal substrates by pulsed laser deposition. All the films, except on YAO, have been grown epitaxially without buffer…

Superconductivity · Physics 2009-11-13 K. Iida , J. Haenisch , R. Huehne , F. Kurth , M. Kidszun , S. Haindl , J. Werner , L. Schultz , B. Holzapfel

A possible superconducting gap, about 35 meV, was observed in silicene on Ag(111) substrate by scanning tunneling spectroscopy. The temperature-dependence measurement reveals a superconductor-metal transition and gives a critical…

Mesoscale and Nanoscale Physics · Physics 2013-01-09 Lan Chen , Baojie Feng , Kehui Wu

Interface enhanced superconductivity at two dimensional limit has become one of most intriguing research directions in condensed matter physics. Here, we report the superconducting properties of ultra-thin FeSe films with the thickness of…

Superconductivity · Physics 2014-08-14 Yi Sun , Wenhao Zhang , Ying Xing , Fangsen Li , Yanfei Zhao , Zhengcai Xia , Lili Wang , Xucun Ma , Qi-Kun Xue , Jian Wang

In this study, we determined the effect of doping with the noble metal Ag on Ir$_2$Te$_4$ superconductors. Based on the resistivity, magnetization, and heat capacity, we explored the changes in the superconductivity and charge density wave…

The phase immiscibility and the excellent matching between Ag(001) and Fe(001) unit cells (mismatch 0.8 %) make Fe/Ag growth attractive in the field of low dimensionality magnetic systems. Intermixing could be drastically limited at…

Materials Science · Physics 2009-11-10 S. Terreni , A. Cossaro , G. Gonella , L. Mattera , L. Duo' , F. Ciccacci , D. Cvetko , L. Floreano , A. Morgante , A. Verdini , M. Canepa

a-Nb(x)Si(1-x) thin films with thicknesses down to 25 {\AA} have been structurally characterized by TEM (Transmission Electron Microscopy) measurements. As-deposited or annealed films are shown to be continuous and homogeneous in…

Superconductivity · Physics 2013-04-29 O. Crauste , A. Gentils , F. Couëdo , Y. Dolgorouky , L. Bergé , S. Collin , C. A. Marrache-Kikuchi , L. Dumoulin

The influence of metallic and semiconducting (V, Al, and Si) under-layer induced charge carrier substitution on the superconducting properties of the Ti40V60 alloy thin films are studied and also compared with a pristine reference film…

We report large transport critical current densities observed in Ag-added (Ba,K)Fe2As2 superconducting wires prepared by an ex-situ powder-in-tube (PIT) process. The wire has a simple composite structure sheathed only by Ag. A precursor…

Superconductivity · Physics 2015-05-27 Kazumasa Togano , Akiyoshi Matsumoto , Hiroaki Kumakura

AgSbTe2 is a well-known thermoelectric material with a high Seebeck coefficient and intrinsically low thermal conductivity, but its behavior under pressure remains largely unexplored. Here we report a systematic investigation of the…

Our measurements of the low frequency ac conductivity in strongly disordered two-dimensional films near the magnetic field-tuned superconductor-to-insulator transition show a sudden drop in the phase stiffness of superconducting order with…

Superconductivity · Physics 2012-12-07 Shashank Misra , Lukas Urban , Minsoo Kim , Ganapathy Sambandamurthy , Ali Yazdani

Coupling losses were studied in composite tapes containing superconducting material in the form of two separate stacks of densely packed filaments embedded in a metallic matrix of Ag or Ag alloy. This kind of sample geometry is quite…

Superconductivity · Physics 2009-11-10 D. Zola , F. Gomory , M. Polichetti , F. Strycek , E. Seiler , I. Husek , P. Kovac , S. Pace

The effect of Ag addition (0-20 wt%) on polycrystalline Sr0.6K0.4Fe2As2 superconductor has been investigated. It is found that the critical transition temperature Tc was not depressed, and the irreversibility field Hirr and hysteresis…

Superconductivity · Physics 2015-05-13 Lei Wang , Yanpeng Qi , Xianping Zhang , Zhaoshun Gao , Dongliang Wang , Yanwei Ma

We study thin films that host coexisting collinear $d$-wave altermagnetic and superconducting orders in the presence of an external magnetic field that fully penetrates the films. We use the Ginzburg-Landau functional to analyze the…

Superconductivity · Physics 2026-03-09 A. A. Mazanik , Rodrigo de las Heras , F. S. Bergeret

In these lectures, superconductivity in impure thin films close to the absolute zero of temperature is discussed. The behavior as function of the applied magnetic field and the amount of impurities suggests the presence of a…

Condensed Matter · Physics 2007-05-23 Adriaan M. J. Schakel

We investigate transition to the superconducting state in the ultrathin titanium nitride films on approach to superconductor-insulator transition. Building on the complete account of quantum contributions to conductivity, we demonstrate…

Superconductivity · Physics 2012-02-07 T. I. Baturina , S. V. Postolova , A. Yu. Mironov , A. Glatz , M. R. Baklanov , V. M. Vinokur

Superconducting thin films have been prepared on Si-substrates, using pulsed laser deposition from a target composed of a mixture of Mg and MgB2 powders. The films were deposited at room temperature and post-annealed at 600 degrees C. The…

In this comment we point out that the experimental evidence for superconductivity presented by Thapa and Pandey in arXiv:1807.08572 is also consistent with a percolation transition. We propose simple follow-up experiments which would help…

Superconductivity · Physics 2018-08-20 David Pekker , Jeremy Levy

A study on the optimization of ambient temperature growth and superconducting properties of Ti-V alloy thin films grown on SiO2-coated Si substrate is reported here. These films have been synthesized by co-sputtering of Ti and V targets,…

Superconductivity · Physics 2023-08-07 Shekhar Chandra Pandey , Shilpam Sharma , Ashish Khandelwal , M. K. Chattopadhyay

Candidates compounds for new thermoelectric and superconducting materials, which have narrow band gap and flat bands near band edges, were exhaustively searched by a high-throughput first-principles calculation from an inorganic materials…

Granular aluminum, which consists of nanometer-sized aluminum grains separated by aluminum oxide, is a peculiar superconductor. Its phase diagram as function of normal-state resistivity features a superconducting dome with a maximum…