期刊
PHYSICAL REVIEW LETTERS
卷 99, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.99.187001
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资金
- Engineering and Physical Sciences Research Council [EP/C511778/1] Funding Source: researchfish
We employ a combination of chemical substitution and angle resolved photoemission spectroscopy to prove that the Fermi level in the gamma band of Sr2-gamma La gamma RuO4 can be made to traverse a van Hove singularity. Remarkably, the large mass renormalization has little dependence on either k or doping. By combining the results from photoemission with thermodynamic measurements on the same batches of crystals, we deduce a parametrization of the full many-body quasiparticle dispersion in Sr2RuO4 which extends from the Fermi level to approximately 20 meV above it.
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