cuprates - a ground state candidate at high magnetic fields

The normal state beneath the superconducting dome determines the fluctuations that govern the anomalous properties of cuprate superconductors in a wide range of their phase diagram. Recent experiments at very high magnetic fields shed new light on the phenomenology of the high field ground state: A drastic change in the carrier density at the onset of the pseudogap observed in various cuprate compounds, thermodynamic signatures of a quantum critical point at this doping and, very recently, NMR and ultrasound experiments indicated glassy antiferromagnetic order up to the pseudogap onset.

We present incommensurate spiral magnetic order as a potential ground state candidate at high magnetic fields [1,2]. Previous theoretical work suggests that suppression of superconductivity leads to such a ground state [3]. We present quantitative results for magnetic order in the Hubbard model at strong coupling using dynamical mean-field theory [4]. We show that experimental signatures as Fermi arcs, nematicity and the drop in both the DC conductivity and Hall number can be understood within this framework.

[1] A. Eberlein et al, PRL 117, 187001 (2016)
[2] J. Mitscherling et al, PRB 98, 195126 (2018)
[3] H. Yamase et al, PRL 116, 096402 (2016)
[4] P. M. Bonetti et al, arXiv:2002.02786 (2020)