Fermi surfaces of LaRhSi3 and CeRhSi3

Incommensurate magnetic order in the pressure-induced superconductor CeRhSi3

“…The magnetic intensity of the former is larger than that of the latter, which roughly indicates that the magnetic moment lies in the a2b plane. This fact is in excellent agreement with an anisotropy of the susceptibility measurement [7]. Fig.…”

“…At Q ¼ ð0:215; 0; 1:5Þ, the intensities of $800 counts well below T N gradually decreases with temperature and suddenly drops to $180 counts of background intensity around T N $1:6 K. The temperature dependence at Q ¼ ð0:785; 0; 0:5Þ also shows the similar behavior. It should be noted that the obtained Ne´el temperature of 1:6 K corresponds to the anomaly in both the susceptibility and electrical resistivity measurements using single crystals [7].…”

“…Although the sample mosaicity, as shown in Fig. 1, confines the determination of the magnetic structure (the orientation and the magnitude of the magnetic moment), we propose that the spin-density wave state is realized below T N in CeRhSi 3 due to the following two reasons: (1) there is little third-order magnetic intensity at Q ¼ (AE3d, 0, 0.5), which excludes the possibility of the anti-phase magnetic domain structure, (2) dHvA signals in both CeRhSi 3 and LaRhSi 3 are observed and the different Fermi surfaces lead to that the 4f electrons of CeRhSi 3 are itinerant [7], which excludes the spiral magnetic structure derived from the local moment magnetism.…”

Electron Correlation and Pairing States in Superconductors without Inversion Symmetry

“…[31][32][33][34] An intriguing feature of these systems is that according to LDA calculations and de Haas-van Alphen experiments, the SO splitting of the Fermi surfaces is much larger than the superconducting gap. 17,[35][36][37] For instance, in the case of CePt 3 Si, the magnitude of the SO splitting is nearly equal to 10 percent of the Fermi energy. 17,35 This large SO splitting indicates the important role of parity violation in these superconductors.…”

Fermi Liquid Theory for Heavy Fermion Superconductors without Inversion Symmetry: Magnetism and Transport Coefficients

“…As a matter of fact, for the noncentrosymmetric heavy fermion superconductors CePt 3 Si and CeRhSi 3 , the typical size of the spin-orbit-splitting is of order 0.1E F with E F the Fermi energy, and dominates over the quasiparticle damping. 34,35,45 Then, the current-current correlation function K xy is expressed in terms of the Green functions,…”