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Charge-dependent anisotropy Fourier coefficients (v n) of particle azimuthal distributions are measured in pPb and PbPb collisions at √ s NN = 5.02 TeV with the CMS detector at the LHC. The normalized difference in the second-order anisotropy coefficients (v 2) between positively and negatively charged particles is found to depend linearly on the observed event charge asymmetry with comparable slopes for both pPb and PbPb collisions over a wide range of charged particle multiplicity. In PbPb, the third-order anisotropy coefficient v 3 shows a similar linear dependence with the same slope as seen for v 2. The observed similarities between the v 2 slopes for pPb and PbPb, as well as the similar slopes for v 2 and v 3 in PbPb, are compatible with expectations based on local charge conservation in the decay of clusters or resonances, and constitute a challenge to the hypothesis that, at LHC energies, the observed charge asymmetry dependence of v 2 in heavy ion collisions arises from a chiral magnetic wave.

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β-TeVO4 is a frustrated spin 1/2 zigzag chain system, where spin-density-wave (SDW), vectorchiral (VC) and an exotic dynamic spin-stripe phase compete at low temperatures. Here we use torque magnetometry to study the anisotropy of these phases in magnetic fields of up to 5 T. Our results show that the magnetic-field-induced spin reorientation occurs in the SDW and in the spinstripe phases for µ0H ≥ 2 T. The observed spin reorientation is a new element of the anisotropic phase diagram for the field directions in the ac and a * b crystallographic planes. The presented results should help establishing the model of anisotropic magnetic interactions, which are responsible for the formation of complex magnetic phases in β-TeVO4 and similar quantum systems.

We report on linear magnetoelectric effect observed by the static electric polarization measurements in external magnetic field up to 12 T on topological multidomain antiferromagnet Cu3TeO6. The polarization is non-zero only below the Néel temperature and for E ⊥ H. The magnetization data show spin reorientation taking place already in H < 1 T. This is fully captured by the anisotropic Heisenberg spin Hamiltonian, revealing the change of the magnetic point group from 3' in the ground state to m in the applied magnetic field, in agreement with the observed magnetoelectric effect. Both point groups allow the ferrotoroidic order which could be a source of magnetoelectric effect in this system. Our results establish Cu3TeO6 as a playground for the study of magnetoelectric topological antiferromagnets and a host of several phenomena which are of interest for future spintronic devices.