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arXiv · 1901.09743

Interplay between magnetic and superconducting fluctuations in the doped 2d Hubbard model

Anna Kauch·Felix Hörbinger·Motoharu Kitatani·Gang Li·Karsten Held
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Abstract

We study the Hubbard model on a square lattice, using the dynamical vertex approximation and the parquet approximation. These methods allow us to describe the mutual interference of spin-fluctuations in the particle-hole channel and superconducting fluctuations in the cooperon channel in an unbiased way. For small dopings we find predominant commensurable antiferromagnetic spin- and d-wave superconducting fluctuations; for larger doping incommensurate antiferromagnetic spin fluctuations are concomitant to triplet s-wave superconducting fluctuations.

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Anna Kauch, Felix Hörbinger, Motoharu Kitatani, Gang Li, Karsten Held. 2019-01-28. Interplay between magnetic and superconducting fluctuations in the doped 2d Hubbard model. https://arxiv.org/abs/1901.09743

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