d-Wave Superconductivity and Pomeranchuk Instability in the Two-Dimensional Hubbard Model

Christoph J. Halboth and Walter Metzner
Phys. Rev. Lett. 85, 5162 – Published 11 December 2000
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Abstract

We present a systematic stability analysis for the two-dimensional Hubbard model, which is based on a new renormalization group method for interacting Fermi systems. The flow of effective interactions and susceptibilities confirms the expected existence of a d-wave pairing instability driven by antiferromagnetic spin fluctuations. More unexpectedly, we find that strong forward scattering interactions develop which may lead to a Pomeranchuk instability breaking the tetragonal symmetry of the Fermi surface.

  • Received 21 March 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.5162

©2000 American Physical Society

Authors & Affiliations

Christoph J. Halboth and Walter Metzner

  • Institut für Theoretische Physik C, Technische Hochschule Aachen, Templergraben 55, D-52056 Aachen, Germany

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Vol. 85, Iss. 24 — 11 December 2000

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