CeCoIn5超导Q相中的序参量和涡旋
Order parameter and vortices in the superconducting Q-phase of CeCoIn5
摘要：
最近，已经报道了CeCoIn 5（Q相）中的低温高磁场相具有仅存在于该相中的自旋密度波（SDW）序。这表明SDW序是在与d波超导共存的超导相中对密度波（PDW）序发展的结果。在这里，我们开发了一个现象学理论，这些共存的订单。这为PDW顺序提供了选择规则，并进一步表明该顺序的详细结构受到高度约束。然后，我们将我们的理论应用到涡旋相。这揭示了涡旋相，其中d波涡核表现出电荷密度波（CDW）顺序，并进一步揭示了SDW顺序提供了一个独特的探测涡旋相。
英文摘要：
Recently, it has been reported that the low-temperature high-magnetic field phase in CeCoIn5 (Q-phase), has spin-density wave (SDW) order that only exists within this phase. This indicates that the SDW order is the result of the development of pair density wave (PDW) order in the superconducting phase that coexists with d-wave superconductivity. Here we develop a phenomenological theory for these coexisting orders. This provides selection rules for the PDW order and further shows that the detailed structure of this order is highly constrained. We then apply our theory to the the vortex phase. This reveals vortex phases in which the d-wave vortex cores exhibit charge density wave (CDW) order and further reveals that the SDW order provides a unique probe of the vortex phase.
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