%0 Journal Article
%T Effect of magnetic field on competition between superconductivity and charge order below the pseudogap state
%A H. Meier
%A M. Einenkel
%A C. P¨¦pin
%A K. B. Efetov
%J Physics
%D 2013
%I arXiv
%R 10.1103/PhysRevB.88.020506
%X We theoretically investigate the T-B phase diagram of cuprates building on the SU(2) pseudogap order recently obtained from the spin-fermion model. At low temperatures, our analysis reveals an almost temperature-independent critical magnetic field B_{QDW} at which d-wave superconductivity switches to the quadrupole density wave (QDW) phase. For temperatures beyond a certain value of the order of the zero-field superconducting transition temperature T_c, the critical field B_{QDW}(T) sharply grows. We compare our results derived within the effective SU(2) non-linear sigma-model with the phase diagram recently obtained by sound velocity measurements by LeBoeuf et al. [Nat. Phys. 9, 79 (2013)].
%U http://arxiv.org/abs/1306.6871v2