期刊
PHYSICAL REVIEW RESEARCH
卷 1, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.1.033206
关键词
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资金
- DOE Office of Basic Energy Sciences [DE-SC0018945]
- Simons Foundation
- U.S. Department of Energy (DOE) [DE-SC0018945] Funding Source: U.S. Department of Energy (DOE)
We study the effect of electron interaction in an electronic system with a high-order Van Hove singularity, where the density of states shows a power-law divergence. Owing to scale invariance, we perform a renormalization group (RG) analysis to find a nontrivial metallic behavior where various divergent susceptibilities coexist but no long-range order appears. We term such a metallic state as a supermetal. Our RG analysis reveals noninteracting and interacting fixed points, which draws an analogy to the phi(4) theory. We further present a finite anomalous dimension at the interacting fixed point by a controlled RG analysis, thus establishing an interacting supermetal as a non-Fermi liquid.
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