Study of topological order and detection of edge statein the spin liquid state realized in an organic material

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I have confirmed that the organic triangular-lattice system EtMe_3Sb[Pd(dmit)_2]_2 has an spin-liquid ground state without antiferromagnetic ordering. The temperature dependence of the spin-lattice relaxation rate suggests that the spin state of this system undergoes an abrupt change at around 1 K. Although some theories had predicted that such an instability is accompanied by topological ordering, I have reached a conclusion that topological ordering is not likely to be realized in this system.I have also clarified the electronic states which appear when this spin liquid state is destroyed by substituting the counter cation or applying pressure.