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Spin Liquid State in an Organic Mott Insulator with Triangular Lattice by Shimizu, Y.; Miyagawa, K.; Kanoda, K.; Maesato, M.; Saito, G. is a scholarly article available to read on EtoBox.

What is Spin Liquid State in an Organic Mott Insulator with Triangular Lattice about?

$^{1}$H NMR and static susceptibility measurements have been performed in an organic Mott insulator with nearly isotropic triangular lattice, $\kappa$-(BEDT-TTF)$_{2}$Cu$_{2}$(CN)$_{3}$, which is a model system of frustrated quantum spins. The static susceptibility is described by the spin $S$ = 1/2 antiferromagnetic triangular-lattice Heisenberg model with the exchange constant $J$ $\sim$ 250 K. Regardless of the large magnetic interactions, the $^{1}$H NMR spectra show no indication of long-range magnetic ordering down to 32 mK, which is four-orders of magnitude smaller than $J$. These results suggest that a quantum spin liquid state is realized in the close proximity of the superconducting state appearing under pressure.

Author

Shimizu, Y.; Miyagawa, K.; Kanoda, K.; Maesato, M.; Saito, G.

Published

2003

Language

EN