Zobrazeno 1 - 10
of 132
pro vyhledávání: '"J-C. Villegier"'
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 13, Iss 12, p 121001 (2010)
The best rf bulk niobium accelerating cavities have nearly reached their ultimate limits at rf equatorial magnetic field H≈200 mT close to the thermodynamic critical field H_{c}. In 2006 Gurevich proposed to use nanoscale layers of superconducting
Externí odkaz:
https://doaj.org/article/6d9e529f0f194c1b85e2183afdd5fd9e
Autor:
Nadia Martucciello, Sandro Pace, Armando Galluzzi, Angela Nigro, Massimiliano Polichetti, J. C. Villegier, Gaia Grimaldi, C. Ferdeghini, E. Bellingeri, Valeria Braccini, Antonio Leo
Publikováno v:
IEEE Transactions on Applied Superconductivity. 29:1-4
We study the temperature dependence of the upper critical magnetic field Hc2 in a layered iron-based superconducting (IBS) material of the 11-family, namely the Fe(Se,Te) thin film grown on CaF2 substrate. On the basis of intrinsic anisotropy as well
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df8deab058dec115dbb8794c78d85596
https://doi.org/10.1109/tasc.2019.2895744
https://doi.org/10.1109/tasc.2019.2895744
Autor:
Nadia Martucciello, Francesco Avitabile, Gaia Grimaldi, Antonio Leo, J. C. Villegier, Angela Nigro, Sandro Pace
Publikováno v:
IEEE Transactions on Applied Superconductivity. 28:1-4
In a superconducting photon detector, the effective transition to the normal state can be induced by the instability of the flux flow regime. Indeed, in the presence of self-magnetic field, the local suppression of superconductivity induced by photon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d169460648f9fa0ad66361f33e0ae76
https://doi.org/10.1109/tasc.2018.2841930
https://doi.org/10.1109/tasc.2018.2841930
Autor:
Gaia Grimaldi, Paola Romano, J. C. Villegier, Antonio Leo, Angela Nigro, Nadia Martucciello, Sandro Pace, Francesco Avitabile
Publikováno v:
2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace).
Cooling efficiency and thermal stability is strictly demanding for practical applications of superconductors operating at current values close to the critical current, such as superconducting detectors. Indeed, a thermally unstable device can show pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d74f127d3d376caa6b718cff825fdbd3
https://doi.org/10.1109/metroaerospace.2018.8453575
https://doi.org/10.1109/metroaerospace.2018.8453575
Autor:
V. La Ferrara, J. C. Villegier, Gaia Grimaldi, Antonio Leo, Sandro Pace, Eugenia Bobeico, Angela Nigro, A. Guarino, Nadia Martucciello
Vortex dynamics is strongly connected with the mechanisms responsible for the photon detection of superconducting devices. Indeed, the local suppression of superconductivity by photon absorption may trigger vortex nucleation and motion effects, which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a1f2e6bf6b85c077176450129df89e9
http://hdl.handle.net/11386/4714271
http://hdl.handle.net/11386/4714271
Autor:
G. Lamura, C. Antoine, M. Aurino, J. F. Jacquot, S. Berry, J. C. Villegier, Antonello Andreone
Publikováno v:
IEEE Transactions on Applied Superconductivity. 21:2601-2604
The best rf accelerating cavities are made of bulk niobium. This technology is now close to it full development, with any further improvement limited by the superconducting properties of Nb itself. In the best performing cavities the rf equatorial ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf51213683cfb16c1a21f41a0e2b7392
https://doi.org/10.1109/tasc.2010.2100347
https://doi.org/10.1109/tasc.2010.2100347
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 15:453-456
We have designed a band-pass sigma-delta modulator made in niobium nitride technology. The basic components of such a 10 GHz carrier frequency modulator are a band filtering resonator and an SFQ comparator synchronized with a clock frequency up to 20
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c37f2e8182d8ea29cdd0eec9bd3b1a8
https://doi.org/10.1109/tasc.2005.849872
https://doi.org/10.1109/tasc.2005.849872
Resistless patterning of quantum nanostructures by local anodization with an atomic force microscope
Autor:
C. Thirion, D. Tonneau, Vincent Bouchiat, Wolfgang Wernsdorfer, N. Clément, David Fraboulet, H. Dallaporta, Jacques Gautier, J. C. Villegier, S. Safarov, Bernard Pannetier, Denis Mariolle, Marc Faucher, T. Fournier
Publikováno v:
Microelectronic Engineering. :517-522
We report here two processes for fabricating quantum devices based on local anodization induced by Atomic Force Microscope (AFM). The first process involves ultra-thin films of doped silicon-on-insulator (SOI) passivated with hydrogen. AFM-drawn oxid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d47590485eb17df3110ed4100800ee7
https://doi.org/10.1016/s0167-9317(02)00524-5
https://doi.org/10.1016/s0167-9317(02)00524-5
Publikováno v:
Journal de Physique IV (Proceedings). 12:141-144
Superconducting hot electron bolometer mixers are now a competitive alternative to Schottky diode mixers in the terahertz frequency range because of their ultra wideband (from millimeter waves to visible light), high conversion gain, and low intrinsi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d806dc159cbdf3d10995fe270288b2a
https://doi.org/10.1051/jp420020054
https://doi.org/10.1051/jp420020054
The temperature behaviour of the first critical field ($B_{C1}$) of superconducting thin film samples can be determined with high accuracy using an inductive and contactless method. Driving a sinusoidal current in a single coil placed in front of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c69a89d846cfb30012250d46d40e64cf
http://hdl.handle.net/11588/357007
http://hdl.handle.net/11588/357007