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Anion effects on the electronic structure and electrodynamic properties of the Mott insulator kappa$-(BEDT-TT$_2Ag2(CN)3 (CROSBI ID 232347)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Pinterić, Marko ; Lazić, Predrag ; Pustogow, Andrej ; Ivek, Tomislav ; Kuveždić, Marko ; Milat, Ognjen ; Gumhalter, Branko ; Basletić, Mario ; Čulo, Matija ; Korin-Hamzić, Bojana et al. Anion effects on the electronic structure and electrodynamic properties of the Mott insulator kappa$-(BEDT-TT$_2Ag2(CN)3 // Physical review. B, Rapid communications, 94 (2016), 16; 161105 (R), 6. doi: 10.1103/PhysRevB.94.161105

Podaci o odgovornosti

Pinterić, Marko ; Lazić, Predrag ; Pustogow, Andrej ; Ivek, Tomislav ; Kuveždić, Marko ; Milat, Ognjen ; Gumhalter, Branko ; Basletić, Mario ; Čulo, Matija ; Korin-Hamzić, Bojana ; Loehle Anja ; Huebner, R ; Sanz Alonso, M ; Hiramatsu, T ; Yoshida Y ; Saito, Gunzi ; Dressel, Martin ; Tomić, Silvia

engleski

Anion effects on the electronic structure and electrodynamic properties of the Mott insulator kappa$-(BEDT-TT$_2Ag2(CN)3

The Mott insulator $\kappa$-(BEDT-TTF)$_2$\-Ag$_2$(CN)$_3$ forms a highly-frustrated triangular lattice of $S=1/2$ dimers with a possible quantum-spin-liquid state. Our experimental and numerical studies reveal the emergence of a slight charge imbalance between crystallographically inequivalent sites, relaxor dielectric response and hopping dc transport. In a broader perspective we conclude that the universal properties of strongly-correlated charge-transfer salts with spin liquid state are an anion-supported valence band and cyanide-induced quasi-degenerate electronic configurations in the relaxed state. The generic low-energy excitations are caused by charged domain walls rather than by fluctuating electric dipoles. They give rise to glassy dynamics characteristic of dimerized Mott insulators, including the sibling compound $\kappa$-(BEDT-TTF)$_2$\-Cu$_2$(CN)$_3$.

Mott insulator ; quantum spin liquid ; relaxor dielectric relaxation ; DFT calculations ; strongly correlated systems

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Podaci o izdanju

94 (16)

2016.

161105 (R)

6

objavljeno

1082-586X

1089-4896

10.1103/PhysRevB.94.161105

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Fizika

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