1206.2324 (V. R. Shaginyan et al.)

Scaling in Dynamic Susceptibility of Herbertsmithite and Heavy-Fermion
Metals    [PDF]

V. R. Shaginyan, A. Z. Msezane, K. G. Popov, V. A. Khodel

We present a theory of the dynamic magnetic susceptibility of quantum spin liquid. The obtained results are in good agreement with experimental facts collected on herbertsmithite ZnCu_3(OH)_6Cl_2 and on heavy-fermion metals, and allow us to predict a new scaling in magnetic fields in the dynamic susceptibility. Under the application of strong magnetic fields quantum spin liquid becomes completely polarized. We show that this polarization can be viewed as a manifestation of gapped excitations when investigating the spin-lattice relaxation rate.

View original: http://arxiv.org/abs/1206.2324