arXiv (Cornell University)
Origin of the non-Fermi-liquid behavior in CeRh2As2
September 2024 • P. Khanenko, D. Hafner, Konstantin Semeniuk, Jacintha Banda, T. Luehmann, F. Baertl, Tommy Kotte, J. Wosnitza, Gertrud Zwicknagl, C. Geibel, J. F. La…
Unconventional superconductivity in heavy-fermion systems appears often near magnetic quantum critical points (QCPs). This seems to be the case also for CeRh2As2 (Tc $\approx$ 0.31 K). CeRh2As2 shows two superconducting (SC) phases, SC1 and SC2, for a magnetic field along the c axis of the tetragonal unit cell, but only the SC1 phase is observed for a field along the basal plane. Furthermore, another ordered state (phase-I) is observed below T0 $\approx$ 0.48 K whose nature is still unclear: Thermodynamic and magn…