144 citations · 583 across the 14 of their papers we have counts for
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Collective excitations and divergent spin currents in non-centrosymmetric superconductors
Markus Lysne, Philipp Werner, Nikolaj Bittner
We study the collective modes in a non-centrosymmetric superconductor with Rashba spin-orbit coupling under laser irradiation. The concept of Anderson Pseudospin Resonance allows t…
Possible light-induced superconductivity in a strongly correlated electron system
Nikolaj Bittner, Takami Tohyama, Stefan Kaiser +1
Using a nonequilibrium implementation of the Lanczos-based exact diagonalisation technique we study the possibility of the light-induced superconducting phase coherence in a solid…
Leggett modes and the Anderson-Higgs mechanism in superconductors without inversion symmetry
Nikolaj Bittner, Dietrich Einzel, Ludwig Klam +1
We develop a microscopic and gauge-invariant theory for collective modes resulting from the phase of the superconducting order parameter in non-centrosymmetric superconductors. Con…
Two-fluid description of two-band superconductors
Nikolaj Bittner, Dietrich Einzel
We present a systematic study of the response properties of two-band (multi-gap) superconductors with spin-singlet (s-wave) pairing correlations, which are assumed to be caused by…
Fermi Surface of the Electron-doped Cuprate Superconductor Nd_{2-x}Ce_xCuO_{4} Probed by High-Field Magnetotransport
M. V. Kartsovnik, T. Helm, C. Putzke +10
We report on the study of the Fermi surface of the electron-doped cuprate superconductor NdCeCuO by measuring the interlayer magnetoresistance as a function of th…
Magnetic Breakdown in the electron-doped cuprate superconductor NdCeCuO: the reconstructed Fermi surface survives in the strongly overdoped regime
T. Helm, M. V. Kartsovnik, I. Sheikin +8
We report on semiclassical angle-dependent magnetoresistance oscillations (AMRO) and the Shubnikov-de Haas effect in the electron-overdoped cuprate superconductor NdCeC…
Fermi Surface Evolution in an Electron-Doped High-Tc Superconductor Revealed by Magnetic Quantum Oscillations
T. Helm, M. V. Kartsovnik, M. Bartkowiak +5
We report on the direct probing of the Fermi surface in the bulk of the electron-doped superconductor NdCeCuO at different doping levels by means of magnetoresistan…