Superconductivity and magnetic order in CeRhIn${}_5$; spectra of coexistence

Abstract

We discuss the fixed-point Hamiltonian and the spectrum of excitations of a quasi-bidimensional electronic system supporting simultaneously antiferromamagnetic ordering and superconductivity. The coexistence of these two order parameters in a single phase is possible because the magnetic order is linked to the formation of a spin density wave, and its order parameter is not associated to a spectral gap but to an energy shift of the paramagnetic bands. This peculiarity entails several distinct features in the phase diagram and the spectral properties of the model, which may have been observed in CeRhIn${}_5$. Apart from the coexistence, we find an abrupt suppression of the spin density wave when the superconducting and magnetic ordering temperatures are equal. The divergence of the cyclotron mass extracted from de Haas-van Alphen experiments is also analyzed in the same framework.

References in corpus (6)

• The SIESTA method for ab initio order-N materials simulation
• Efficient index handling of multidimensional periodic boundary conditions
• Hidden Magnetism and Quantum Criticality in the Heavy Fermion Superconductor CeRhIn5
• Magnetic structure of CeRhIn_5 as a function of pressure and temperature
• Coexistence of Antiferromagnetism and Superconductivity near the Quantum Criticality in Heavy Fermion Compound CeRhIn${}_5$
• Two Superconducting Phases in CeRh_1-xIr_xIn_5

Cited by in corpus (5)

• Electronic Duality in Strongly Correlated Matter
• Coexistence of antiferromagnetism and superconductivity within t-J model with strong correlations and nonzero spin polarization
• Ambient-pressure bulk superconductivity deep in the magnetic state of CeRhIn5
• Electron-phonon interaction in Fe-based superconductors: Coupling of magnetic moments with phonons in LaFeAsO${}_{1-x}$F${}_x$
• Magnetic field tuned superconducting and normal phase magnetism in CeCo${}_{0.5}$Rh${}_{0.5}$In${}_5$