25 Result(s)
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Article
Open AccessErratum to: Magnetic dominance of axion electrodynamics: photon capture effect and anisotropy of Coulomb potential
A Correction to this paper has been published: 10.1140/epjc/s10052-021-09046-3
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Open AccessEffects of surface treatments on flux tunable transmon qubits
One of the main limitations in state-of-the art solid-state quantum processors is qubit decoherence and relaxation due to noise from adsorbates on surfaces, impurities at interfaces, and material defects. For ...
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Article
PVA/gelatin-based hydrogel coating of nickel-titanium alloy for improved tissue-implant interface
Nickel-titanium shape memory alloys have attracted notable interest for biomedical applications due to their unique properties. However, there are still some concerns on the potential release of nickel ions ca...
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Article
Open AccessMagnetic dominance of axion electrodynamics: photon capture effect and anisotropy of Coulomb potential
For magnetic fields larger than the characteristic scale linked to axion-electrodynamics, quantum vacuum fluctuations due to axion-like fields can dominate over those associated with the electron-positron fiel...
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Article
Author Correction: A MHz-repetition-rate hard X-ray free-electron laser driven by a superconducting linear accelerator
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Article
A MHz-repetition-rate hard X-ray free-electron laser driven by a superconducting linear accelerator
The European XFEL is a hard X-ray free-electron laser (FEL) based on a high-electron-energy superconducting linear accelerator. The superconducting technology allows for the acceleration of many electron bunch...
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Article
Open AccessStacked search for time shifted high energy neutrinos from gamma ray bursts with the Antares neutrino telescope
A search for high-energy neutrino emission correlated with gamma-ray bursts outside the electromagnetic prompt-emission time window is presented. Using a stacking approach of the time delays between reported g...
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Coincidence of a high-fluence blazar outburst with a PeV-energy neutrino event
The astrophysical sources of the extraterrestrial, very high-energy neutrinos detected by the IceCube collaboration remain to be identified. Gamma-ray (γ-ray) blazars have been predicted to yield a cumulative ...
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Open AccessLight dark matter candidates in intense laser pulses II: the relevance of the spin degrees of freedom
Optical searches assisted by the field of a laser pulse might allow for exploring a variety of not yet detected dark matter candidates such as hidden-photons and scalar minicharged particles. These hypothetica...
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Open AccessLight dark matter candidates in intense laser pulses I: paraphotons and fermionic minicharged particles
Polarimetric experiments driven by the strong field of a circularly polarized laser wave can become a powerful tool to limit the parameter space of not yet detected hidden-photons and minicharged particles ass...
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Open AccessA search for neutrino emission from the Fermi bubbles with the ANTARES telescope
Analysis of the Fermi-LAT data has revealed two extended structures above and below the Galactic Centre emitting gamma rays with a hard spectrum, the so-called Fermi bubbles. Hadronic models attempting to expl...
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Article
Quasi-one-dimensional Fulde-Ferrell-Larkin-Ovchinnikov-like state in Nb/Cu0.41Ni0.59 bilayers
In a ferromagnet (F) being in contact with a superconductor (S) an unconventional finite-momentum pairing of electrons forming Cooper pairs occurs. As a consequence, interference effects of the pairing wave fu...
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Article
Open AccessExotic atoms in superintense laser fields
The interaction of very strong laser fields with hydrogenlike atomic systems is analyzed theoretically. It is shown that the usual magnetic field-induced limitations for efficient recollisions can be overcome ...
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Open AccessRelativistic nonperturbative above-threshold phenomena in strong laser fields
Relativistic features of various nonperturbative above-threshold phenomena in strong laser fields are discussed and compared. This includes above-threshold ionization of multiply charged ions as well as pair p...
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Article
Open AccessLepton pair production in high-frequency laser fields
The production of electron-positron and muon-antimuon pairs in high-frequency laser fields via few-photon absorption is considered. It is assumed that an intense X-ray laser beam collides either with a relativ...
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Article
High-energy, nuclear, and QED processes in strong laser fields
Various applications of ultraintense laser fields in particle physics, nuclear science, and quantum electrodynamics are presented. We discuss laser-driven lepton-pair creation, photon splitting, high-harmonic ...
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Article
Reentrant superconductivity in superconductor-ferromagnetic-alloy bilayers
Oscillating behavior of superconductivity in ultrathin bilayers of niobium and ferromagnetic alloy Cu41Ni59 has been observed. This phenomenon was most pronounced at a Nb layer thickness of about 7.3 nm: the supe...
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Article
Kinetics of polarization reversal in irradiated thin PZT films
The effect of irradiation with electrons and neutrons and of exposure to synchrotron radiation on cyclic switching of polarization in thin films of lead zirconate titanate Pb(Zr,Ti)O3 (PZT) was studied. It is sho...
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Article
Two-Dimensional Superconducting Fluctuations in MgB2 Films
The origin of the resistive transition broadening for superconducting MgB2 films is investigated experimentally. The crucial role of two-dimensional weak and critical fluctuations is demonstrated.
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Chapter
Nanotechnology — Bottom-up Meets Top-down
Great progress has been made over the last years to elucidate the huge potential of mesoscopic nanostructures such as quantum dots and carbon nanotubes. Nano-circuits have been constructed to carry out simple ...
