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Field induced magnetic instability within a superconducting condensate

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 SCIENCE ADVANCES
Page(s) e1602055
Title of proceedings SCIENCE ADVANCES
DOI 10.1126/sciadv.1602055

Abstract

The application of magnetic fields, chemical substitution, or hydrostatic pressure to strongly correlated electron materials can stabilize electronic phases with different organizational principles. We present evidence for a fieldinduced quantum phase transition, in superconducting Nd0.05Ce0.95CoIn5, that separates two antiferromagnetic phases with identical magnetic symmetry. At zero field, we find a spin-density wave that is suppressed at the critical field mu H-0* = 8 T. For H > H*, a spin-density phase emerges and shares many properties with the Q phase in CeCoIn5. These results suggest that the magnetic instability is not magnetically driven, and we propose that it is driven by a modification of superconducting condensate at H*.
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