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Magnetic order in Ce0.95Nd0.05CoIn5: the Q-phase at zero magnetic field

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arxiv 1307.2592 v1 pith:EHXLVLOL submitted 2013-07-09 cond-mat.str-el cond-mat.supr-con

Magnetic order in Ce0.95Nd0.05CoIn5: the Q-phase at zero magnetic field

S. Raymond , S. M. Ramos , D. Aoki , G. Knebel , V. Mineev , G. Lapertot This is my paper
classification cond-mat.str-el cond-mat.supr-con
keywords ordermagneticantiferromagneticcoin5fieldnestingoccurringq-phase
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report neutron scattering experiment results revealing the nature of the magnetic order occurring in the heavy fermion superconductor Ce0.95Nd0.05CoIn5, a case for which an antiferromagnetic state is stabilized at a temperature below the superconducting transition one. We evidence an incommensurate order and its propagation vector is found to be identical to that of the magnetic field induced antiferromagnetic order occurring in the stoichiometric superconductor CeCoIn5, the so-called Q-phase. The commonality between these two cases suggests that superconductivity is a requirement for the formation of this kind of magnetic order and the proposed mechanism is the enhancement of nesting condition by d-wave order parameter with nodes in the nesting area.

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