Competing d-Wave and p-Wave Spin-Singlet Superconductivities in the Two-Dimensional Kondo Lattice

Junya Otsuki

研究成果: Article査読

23 被引用数 (Scopus)

抄録

The Kondo lattice model describes a quantum phase transition between the antiferromagnetic state and heavy-fermion states. Applying the dual-fermion approach, we explore possible superconductivities emerging due to the critical antiferromagnetic fluctuations. The d-wave pairing is found to be the leading instability only in the weak-coupling regime. As the coupling is increased, we observe a change of the pairing symmetry into a p-wave spin-singlet pairing. The competing superconductivities are ascribed to crossover between small and large Fermi surfaces, which occurs with the formation of heavy quasiparticles.

本文言語English
論文番号036404
ジャーナルPhysical review letters
115
3
DOI
出版ステータスPublished - 2015 7月 15

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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