arxiv: 1210.5899 · v1 · pith:QWHYVN3Gnew · submitted 2012-10-22 · ❄️ cond-mat.str-el

Excitations in a quantum spin liquid with random bonds

D. Huvonen , S. Zhao , G. Ehlers , M. M{\aa}nsson , S. N. Gvasaliya , A. Zheludev This is my paper

classification ❄️ cond-mat.str-el

keywords magnonquantumspinadditionalawaybandwidthbondbonds

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We present results of inelastic neutron scattering study on two bond disordered quasi twodimensional quantum magnets (C$_4$H$_12$N$_2$)Cu$_2$(Cl$_{1-x}$Br$_x$)$_6$ with x=0.035 and 0.075. We observe the increase of spin gap, reduction of magnon bandwidth and a decrease of magnon lifetimes compared to x=0 sample. Additional magnon damping is observed at higher energies away from zone center which is found to follow the density of single particle states.

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Excitations in a quantum spin liquid with random bonds

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