期刊
PHYSICAL REVIEW LETTERS
卷 116, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.116.057003
关键词
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资金
- JSPS KAKENHI [26800179]
- Computational Materials Science Initiative (CMSI)
- HPCI Strategic Programs for Innovative Research (SPIRE)
- RIKEN Advanced Institute for Computational Science (AICS) through HPCI System Research Project from MEXT, Japan [hp120043, hp120283, hp130007, hp140215, hp150211]
- [22104010]
- [22340090]
- Grants-in-Aid for Scientific Research [26800179] Funding Source: KAKEN
The dynamics of a microscopic cuprate model, namely, the two-dimensional Hubbard model, is studied with a cluster extension of the dynamical mean-field theory. We find a nontrivial structure of the frequency-dependent self-energies, which describes an unprecedented interplay between the pseudogap and superconductivity. We show that these properties are well described by quasiparticles hybridizing with (hidden) fermionic excitations, emergent from the strong electronic correlations. The hidden fermion enhances superconductivity via a mechanism distinct from a conventional boson-mediated pairing, and originates the normal-state pseudogap. Though the hidden fermion is elusive in experiments, it can solve many experimental puzzles.
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