Results 61 to 70 of about 137,728 (296)

Challenges and Opportunities of Very Light High-Performance Electric Drives for Aviation

Energies, 2018
The demand for alternative fueling methods to reduce the need for fossil fuels is not limited to the electrification of ground vehicles. More-electric and all-electric aircraft pose challenges, with extensive requirements in terms of power density ...
Markus Henke, Gerrit Narjes, Jan Hoffmann, Constantin Wohlers, Stefan Urbanek, Christian Heister, Jörn Steinbrink, Wolf-Rüdiger Canders, Bernd Ponick   +8 more
doaj   +1 more source

Kinetic Regimes of Hydrogen Absorption in Thin Films

Advanced Functional Materials, EarlyView.
Knowledge of the hydrogen incorporation mechanisms in thin layers in relation to the amount absorbed is essential to design coatings and devices compatible with hydrogen‐based technologies. A combination of simultaneous in situ methods gives detailed insight into the hydrogenation of a prototypical hydrogen absorber layer in a time‐dependent manner ...
Laura Guasco, Sabine Pütter, Yury N. Khaydukov, Luca Silvi, Mariano A. Paulin, Attila Csik, Thomas Keller, Bernhard Keimer   +7 more
wiley   +1 more source

Low-loss α-tantalum coplanar waveguide resonators on silicon wafers: fabrication, characterization and surface modification

Materials for Quantum Technology
The performance of state-of-the-art superconducting quantum devices is currently limited by microwave dielectric loss at different interfaces. α -tantalum is a superconductor that has proven effective in reducing dielectric loss and improving device ...
D P Lozano, M Mongillo, X Piao, S Couet, D Wan, Y Canvel, A M Vadiraj, Ts Ivanov, J Verjauw, R Acharya, J Van Damme, F A Mohiyaddin, J Jussot, P P Gowda, A Pacco, B Raes, J Van de Vondel, I P Radu, B Govoreanu, J Swerts, A Potočnik, K De Greve   +21 more
doaj   +1 more source

Collective excitations of a charged Fermi superfluid in the BCS-BEC crossover

New Journal of Physics, 2023
We consider collective excitations in the superfluid state of Fermi condensed charged gases. The dispersion and damping of collective excitations at nonzero temperatures are examined, and the coexistence and interaction of different branches of ...
S N Klimin, J Tempere, T Repplinger, H Kurkjian   +3 more
doaj   +1 more source

Effects of thermal fluctuations on the magnetic behavior of mesoscopic superconductors

, 2005
We study the influence of thermal fluctuations on the magnetic behavior of square mesoscopic superconductors. The strength of thermal fluctuations are parameterized using the Ginzburg number, which is small ($G_i \approx 10^{-10}$) in low-$T_c ...
A. D. Hernández, B. J. Baelus, D. Domínguez, F. M. Peeters, J. D. Jackson, L. Burlachkov, M. Konczykowski, V. L. Ginzburg   +7 more
core   +1 more source

Fast Track to the Overdoped Regime of Superconducting YBa2Cu3O7‐δ Thin Films via Electrochemical Oxidation

Advanced Functional Materials, EarlyView.
Overdoping high temperature superconductors, such as YBa2Cu3O7‐δ (YBCO), is expected to maxime the critical current density by optimising the condensation energy for a given defect landscape, providing new thrust for the development of fusion enabling coated conductors. Here, precise oxygen control is achieved via an electrochemical method allowing for
Alexander Stangl, Aiswarya Kethamkuzhi, Hervé Roussel, Cornelia Pop, Xavier Obradors, Teresa Puig, Mónica Burriel, Arnaud Badel   +7 more
wiley   +1 more source

Correlation between optical phonon softening and superconducting in YBa2Cu3Ox within d-wave Eliashberg theory

JPhys Materials
We provide a mathematical description, based on d -wave Eliashberg theory, of the strong correlation between the experimentally observed softening of Raman modes associated with in-plane oxygen motions and the corresponding superconducting critical ...
Cunyuan Jiang, Giovanni Alberto Ummarino, Matteo Baggioli, Efthymios Liarokapis, Alessio Zaccone   +4 more
doaj   +1 more source

Electrodynamics of Superconductors: From Lorentz to Galilei at Zero Temperature

Entropy
We discuss the derivation of the electrodynamics of superconductors coupled to the electromagnetic field from a Lorentz-invariant bosonic model of Cooper pairs.
Luca Salasnich
doaj   +1 more source

Optical Josephson effects using phase-conjugating mirrors: an analogy with superconductors

Journal of Telecommunications and Information Technology, 2000
Motivated by the analogy between a phase-conjugating mirror (PCM) and a superconductor, we search for optical counterparts of the well-known DC and AC Josephson effects.
Miriam Blaauboer, Daan Lenstra, Adri Lodder   +2 more
doaj   +1 more source

Chirality and Organization of Adsorbates Modify Surface Phonon Dynamics

Advanced Functional Materials, EarlyView.
Chirality and molecular organization are shown to influence surface phonon dynamics in gold films. Time‐resolved Joule heating measurements reveal that ordered homochiral monolayers increase the Debye temperature and disordered layers reduce it, while ordered racemic controls have no effect.
Meital Ozeri, Eugenia Pyurbeeva, Shira Yochelis, Jonas Fransson, Ronnie Kosloff, Oded Millo, Yossi Paltiel   +6 more
wiley   +1 more source