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Regensburg 2016 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 63: Low-Dimensional Systems: 2D - Theory

TT 63.2: Talk

Thursday, March 10, 2016, 09:45–10:00, H21

Coexistence of incommensurate magnetism and superconductivity in the two-dimensional Hubbard modelHiroyuki Yamase1,2, •Andreas Eberlein1,3, and Walter Metzner11Max Planck Institute for Solid State Research, Stuttgart, Germany — 2National Institute for Materials Science, Tsukuba, Japan — 3Department of Physics, Harvard University, Cambridge, USA

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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