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Chirality, magnetic charge and other strange entities in resonant x-ray Bragg diffraction

Stephen W Lovesey1,2 and Valerio Scagnoli3

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Subtleties in the electronic structure of complex materials can be directly observed, in great detail, by means of the Bragg diffraction of x-rays whose energy matches an atomic resonance. Strange atomic multipoles can be encountered in the interpretation of measured Bragg intensities, e.g., chirality and magnetic charge. Additionally, the x-ray technique allows the direct observation of the enantiomorphic screw-axis in chiral crystals, such as tellurium, low quartz and berlinite.


PACS

71.20.Ps Other inorganic compounds

61.05.cp X-ray diffraction

75.30.Cr Saturation moments and magnetic susceptibilities

61.66.Fn Inorganic compounds

75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects

75.50.Gg Ferrimagnetics

Subjects

Condensed matter: electrical, magnetic and optical

Condensed matter: structural, mechanical & thermal

Dates

Issue 47 (25 November 2009)

Received 7 April 2009, in final form 21 July 2009

Published 5 November 2009



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