Comment on "Two-Spinon and Four-Spinon Continuum in a Frustrated Ferromagnetic Spin-1/2 Chain"

Drechsler, S.-L., Nishimoto, S., Kuzian, R.O., Málek, J., Lorenz, W.E.A., Richter, J., van den Brink, J., Schmitt, M., Rosner, H. Comment on "Two-Spinon and Four-Spinon Continuum in a Frustrated Ferromagnetic Spin-1/2 Chain". Physical Review Letters. 2011, 106(21), 219701-219701. ISSN 0031-9007. E-ISSN 1079-7114. Available: doi: 10.1103/PhysRevLett.106.219701