Researches
Tuning Spin Correlation of Molecular Mott Insulators
2023 Volume 78 Issue 1 Pages 22-27
Details
2023 Volume 78 Issue 1 Pages 22-27
We have developed molecular Mott insulators with triangular lattice. One Mott insulator κ-(ET)2 Ag2(CN)3 has an isotropic triangular lattice and exhibits a quantum spin liquid state with low-lying excitation. It shows Mott and superconducting transitions under pressure and strain. The static and dynamical spin susceptibilities scale to exchange interaction tunable under pressure. Another Mott insulator κ-(ET)2 B (CN)4 has one-dimensional anisotropy and exhibits spin dimerization at 5 K. It shows a first-order transition into an incommensurate antiferromagnetic state under magnetic field above 8 T. The magnetic field response can be the promising method to distinguish gapless spin liquid and gapped spin dimer states.
