title: Coexistence of Incommensurate Magnetism and Superconductivity in the Two-Dimensional Hubbard Model.
abstract: We analyze the competition of magnetism and superconductivity in the two-dimensional Hubbard model with a moderate interaction strength, including the possibility of incommensurate spiral magnetic order. Using an unbiased renormalization group approach, we compute magnetic and superconducting order parameters in the ground state. In addition to previously established regions of Néel order coexisting with d-wave superconductivity, the calculations reveal further coexistence regions where superconductivity is accompanied by incommensurate magnetic order.
authors.affiliation: Max Planck Institute for Solid State Research, D-70569 Stuttgart, Germany.|National Institute for Materials Science, Tsukuba 305-0047, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yamase
authors.affiliation: Max Planck Institute for Solid State Research, D-70569 Stuttgart, Germany.|Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: Andreas
authors.initials: A
authors.lastname: Eberlein
authors.affiliation: Max Planck Institute for Solid State Research, D-70569 Stuttgart, Germany.
authors.forename: Walter
authors.initials: W
authors.lastname: Metzner