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arXiv · 1205.4329

Orbital currents, anapoles, and magnetic quadrupoles in CuO

S. Di Matteo·M. R. Norman
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Abstract

We show that orbital currents in a CuO2 plane, if present, should be described by two independent parity and time-reversal odd order parameters, a toroidal dipole (anapole) and a magnetic quadrupole. Based on this, we derive the resonant X-ray diffraction cross-section for monoclinic CuO at the antiferromagnetic wavevector and show that the two order parameters can be disentangled. From our analysis, we examine a recent claim of detecting anapoles in CuO.

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S. Di Matteo, M. R. Norman. 2012-05-19. Orbital currents, anapoles, and magnetic quadrupoles in CuO. https://doi.org/10.1103/physrevb.85.235143

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