2009/12/31 by Rebecca Flint, Piers Coleman · 2 citations
Materials Science · Physics and Astronomy · #Antiferromagnetism #Condensed matter physics #Electron #Electron pair #Fermion #Heavy fermion #Heavy fermion superconductor #Iron-based superconductors research #Nuclear physics #Nuclear quadrupole resonance #Pairing #Physics #Physics of Superconductivity and Magnetism #Quadrupole #Quantum mechanics #Quasiparticle #Rare-earth and actinide compounds #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.105.246404
published as Phys. Rev. Lett. 105, 246404 (2010) · 4 pages, 3 figures; revised figures; substantially revised draft, adding discussion of NQR shift.
arxiv created 2010/05/07 · openalex publication_date 2010/12/08 · arxiv updated 2011/01/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider the internal structure of a d-wave heavy-fermion superconducting condensate, showing that it necessarily contains two components condensed in tandem: pairs of quasiparticles on neighboring sites and composite pairs consisting of two electrons bound to a single local moment. These two components draw upon the antiferromagnetic and Kondo interactions to cooperatively enhance the superconducting transition temperature. This tandem condensate is electrostatically active, with an electric quadrupole moment predicted to lead to a superconducting shift in the nuclear quadrupole resonance frequency.