Publications (6)
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…
Classification and characterization of nonequilibrium Higgs modes in unconventional superconductors
L. Schwarz, B. Fauseweh, N. Tsuji +8
Recent findings of new Higgs modes in unconventional superconductors require a classification and characterization of the modes allowed by nontrivial gap symmetry. Here we develop…
Coupling of Higgs and Leggett modes in nonequilibrium superconductors
H. Krull, N. Bittner, G. S. Uhrig +2
Collective excitation modes are a characteristic feature of symmetry-broken phases of matter. For example, superconductors exhibit an amplitude Higgs mode and a phase mode, which a…
Correlation between Fermi surface transformations and superconductivity in the electron-doped high- superconductor NdCeCuO
T. Helm, M. V. Kartsovnik, C. Proust +11
Two critical points have been revealed in the normal-state phase diagram of the electron-doped cuprate superconductor NdCeCuO by exploring the Fermi surface propert…
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…