Electric field control of spinon polarisation in a quantummultiferroic
In contrast to other multiferroics which display several branches of discrete spin-wave-like excitation spectra, the excitations of the spin 1/2 multiferroic LiCuVO4 form a continuum with multi-spinon character. The chirality of the spinon excitations is predicted to survive only very close to the magnetic Bragg peak, unlike classical multiferroics or spiral magnets. Our preliminary data indicate that LiCuVO4 does not behave like a classical multiferroic nor according to the theoretical predictions - we find non-chiral continuum states close to the magnetic Bragg peak and chiral states even far away from the magnetic Bragg peak. Our preliminary study was hampered by technical problems to do the full polarisation analysis (y- and z-channels), we can therefore not extract the total magnetic intensity. We ask for 10d to complete our polarized inelastic study with the missing polarisation channels.
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ENDERLE Mechthild; CEMAL Eron; FAK Bjorn; HIRTENLECHNER Eva and MOURIGAL Martin. (2013). Electric field control of spinon polarisation in a quantummultiferroic. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1273
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