Antiferromagnetic Order oriented by Fulde-Ferrell-Larkin-Ovchinnikov Superconducting Order

Abstract

Resolving the high-field superconducting phase (HFSP), often called as the Q-phase, and the antiferromagnetic or spin-density-wave (SDW) order appearing in the phase remains a crucial issue on the superconductor CeCoIn${}_5$. It is shown that a switching of the SDW domain due to a tiny change of the magnetic field direction in HFSP, reported and interpreted as an evidence of the presence of a $\pi$-triplet pairing inducing the SDW order [S. Gerber et al., Nature Physics 10, 126 (2014)], can be explained with no triplet pairing component if the $d$-wave superconducting order in HFSP includes the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) modulation parallel to the field. This result corroborates the picture that HFSP of CeCoIn${}_5$ and the SDW order found only in the phase are consequences of the strong paramagnetic pair-breaking in this $d$-wave superconductor.

arXiv comment8 pages, 4 figures. figure 1 was divided, appendix was added, and some revisions were made. the version accepted for publication in Phys. Rev. B

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• Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State in CeCoIn5
• Effects of Pauli paramagnetism on superconducting vortex phase diagram in strong fields
• Order parameter and vortices in the superconducting Q-phase of CeCoIn5
• Antiferromagnetic Order and π-triplet Pairing in the Fulde-Ferrell-Larkin-Ovchinnikov State
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• Evolution of Paramagnetic Quasiparticle Excitations Emerged in the High-Field Superconducting Phase of CeCoIn5
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• Field-Induced Spin-Exciton Condensation in dx2-y2-wave Superconducting CeCoIn5
• Antiferromagnetic Order in Pauli Limited Unconventional Superconductors
• Inherent spin density wave instability by vortices in superconductors with strong Pauli effects
• Emergent Antiferromagnetism in D-wave Superconductor with Strong Paramagnetic Pair-Breaking
• Impurity-induced broadening of the transition to a Fulde-Ferrell-Larkin-Ovchinnikov phase
• Anomalous doping effect on the superconducting state in CeCoIn${}_5$ at high magnetic fields
• Angular dependence of antiferromagnetic order induced by paramagnetism in d-wave superconductor

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• Evidence for an FFLO state with segmented vortices in the BCS-BEC-crossover superconductor FeSe
• Calorimetric Measurements of Magnetic-Field-Induced Inhomogeneous Superconductivity Above The Paramagnetic Limit
• Intertwined Orders in Heavy-Fermion Superconductor CeCoIn${}_5$
• Nuclear Magnetic Resonance in High Magnetic Field: Application to Condensed Matter Physics
• Instability of Fulde-Ferrell-Larkin-Ovchinnikov states in three and two dimensions
• Topological Larkin-Ovchinnikov phase and Majorana zero mode chain in bilayer superconducting topological insulator films
• Possible Triplet Superconducting Order in Magnetic Superconducting Phase induced by Paramagnetic Pair-Breaking
• Possible Field-Temperature Phase Diagrams of Two-Band Superconductors with Paramagnetic Pair-Breaking
• The Gor'kov and Melik-Barkhudarov correction to the mean-field critical field transition to Fulde-Ferrell-Larkin-Ovchinnikov states
• Coupled k-space structure of $d$-wave superconducting and magnetic orders induced by paramagnetic pair-breaking effect
• Distinct domain switching in Nd0.05Ce0.95CoIn5 at low and high fields