Details

Autor(en) / Beteiligte

• Baeriswyl, D.
• Eichenberger, D.
• Gut, B.

Titel

Superconductivity in the two-dimensional Hubbard model?

Ist Teil von

• Physica Status Solidi (b), 2007-07, Vol.244 (7), p.2299-2303

Ort / Verlag

Berlin: WILEY-VCH Verlag

Erscheinungsjahr

2007

Link zum Volltext

Quelle

Wiley Online Library

Beschreibungen/Notizen

• A refined variational wave function for the two‐dimensional repulsive Hubbard model is studied numerically, with the aim of approaching the difficult crossover regime of intermediate values of U. The issue of a superconducting ground state with d‐wave symmetry is investigated for an average electron density n ≈ 0.8 and for U = 8t. Due to finite‐size effects a clear‐cut answer to this fundamental question has not yet been reached. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)