期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 112, 期 31, 页码 9552-9557出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1512206112
关键词
spin liquid; Fermi liquid; dimer model; superconductivity
资金
- National Science Foundation [DMR-1360789]
- Templeton Foundation
- Multidisciplinary University Research Initiative from Army Research Office [W911NF-14-1-0003]
- Government of Canada through Industry Canada
- Province of Ontario through the Ministry of Research and Innovation
- European Research Council Synergy Grant Ultracold Quantum Matter
- Sonderforschungsbereich Foundations
- Application of Quantum Science of the Austrian Science Fund
- Nano Initiative Munich
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1360789] Funding Source: National Science Foundation
We propose a quantum dimer model for the metallic state of the hole-doped cuprates at low hole density, p. The Hilbert space is spanned by spinless, neutral, bosonic dimers and spin S = 1/2, charge +e fermionic dimers. The model realizes a fractionalized Fermi liquid with no symmetry breaking and small hole pocket Fermi surfaces enclosing a total area determined by p. Exact diagonalization, on lattices of sizes up to 8x8, shows anisotropic quasiparticle residue around the pocket Fermi surfaces. We discuss the relationship to experiments.
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