Abstract
Unconventional superconductivity in many materials is believed to be mediated by magnetic fluctuations. It is an open question how magnetic order can emerge from a superconducting condensate and how it competes with the magnetic spin resonance in unconventional superconductors. Here we study a model -wave superconductor that develops spin-density wave order, and find that the spin resonance is unaffected by the onset of static magnetic order. This result suggests a scenario, in which the resonance in is a longitudinal mode with fluctuating moments along the ordered magnetic moments.
- Received 2 May 2017
DOI:https://doi.org/10.1103/PhysRevLett.119.187002
© 2017 American Physical Society