Journal
PHYSICAL REVIEW LETTERS
Volume 101, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.256405
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Funding
- Swiss National fonds through the NCCR MaNEP
- DFG
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We use the functional renormalization group to analyze the temperature dependence of the quasiparticle scattering rates in the two-dimensional Hubbard model below half-filling. Using a band structure appropriate to overdoped Tl(2)Ba(2)CuO(6+x) we find a strongly angle-dependent term linearly dependent on temperature which derives from an increasing scattering vertex as the energy scale is lowered. This behavior agrees with recent experiments and confirms earlier conclusions on the origin of the breakdown of the Landau-Fermi liquid near the onset of superconductivity.
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