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Coexistence of Incommensurate Magnetism and Superconductivity in the Two-Dimensional Hubbard Model
Hiroyuki Yamase1,2, Andreas Eberlein1,3, Walter Metzner1
1Max Planck Institute for Solid State Research, D-70569 Stuttgart, Germany.
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.
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