Pressure lowers the symmetry of the Nb3 trimer in Nb3Cl8, widens the bands, and shrinks the cluster Mott gap from 1.0 eV to 0.58 eV in bulk, without destroying the insulating state.
Dagotto, Science 309, 257 (2005), publisher: American Association for the Advancement of Science
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Resilient cluster Mott states in layered Nb$_3$Cl$_8$ against pressure-induced symmetry breaking
Pressure lowers the symmetry of the Nb3 trimer in Nb3Cl8, widens the bands, and shrinks the cluster Mott gap from 1.0 eV to 0.58 eV in bulk, without destroying the insulating state.