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Spin Resonance and Magnetic Order in an Unconventional Superconductor

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Mazzone Daniel et al.,
Project Superconductivity in Unconventional Metals and its Interplay with Magnetism
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Original article (peer-reviewed)

Journal Phys. Rev. Lett
Volume (Issue) 199(18)
Page(s) 187002-1 - 187002-5
Title of proceedings Phys. Rev. Lett
DOI 10.1103/phys.revlett119.187002


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 d-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 Nd0.05Ce0.95CoIn5 is a longitudinal mode with fluctuating moments along the ordered magnetic moments.