Dipole-quadrupole interference in circular dichroic resonant x-ray diffraction. (a) The spin quadrupole moments are formed at a higher temperature (263 K) than the magnetic moments (230 K).

IN the preceding note, which the Editor of NATURE has been good enough to let me see in advance of publication, Schmidt, following Murakawa1, suggests that the frequent occurrence of perturbations ...

One such prediction is the existence of a topological insulator with a quadrupole moment, a so called QTI. Researcher Wladimir Benalcazar noted: “We found that electrons in crystals can collectively ...