Electrodynamics in Organic Dimer Insulators Close to Mott Critical Point
| Autor: | Bojana Korin-Hamzić, M. Pinterić, Matija Čulo, Martin Dressel, Weiwu Li, Ognjen Milat, David Rivas Góngora, Silvia Tomić, Miriam Sanz Alonso, Predrag Lazić, Tomislav Ivek, Andrej Pustogow, G. G. Lesseux, Željko Rapljenović, Branko Gumhalter |
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| Rok vydání: | 2018 |
| Předmět: |
Phase boundary
General Chemical Engineering media_common.quotation_subject Frustration 02 engineering and technology Dielectric strongly correlated systems mott insulators quantum spin liquid dielectric properties vibrational properties density functional theory 01 natural sciences Inorganic Chemistry Critical point (thermodynamics) Condensed Matter::Superconductivity 0103 physical sciences lcsh:QD901-999 Antiferromagnetism General Materials Science 010306 general physics media_common Physics Condensed matter physics Mott insulator 021001 nanoscience & nanotechnology Condensed Matter Physics Density functional theory Condensed Matter::Strongly Correlated Electrons lcsh:Crystallography Quantum spin liquid 0210 nano-technology |
| Zdroj: | Crystals Crystals, Vol 8, Iss 5, p 190 (2018) Crystals; Volume 8; Issue 5; Pages: 190 |
| ISSN: | 2073-4352 |
| DOI: | 10.3390/cryst8050190 |
| Popis: | Organic layered charge-transfer salts κ -(BEDT-TTF) 2 X form highly frustrated lattices of molecular dimers in which strong correlations give rise to Mott insulating states situated close to the metal-to-insulator phase boundary. The salts κ -(BEDT-TTF) 2 Cu 2 (CN) 3 and κ -(BEDT-TTF) 2 Ag 2 (CN) 3 have been considered as prime candidates for a quantum spin liquid, while κ -(BEDT-TTF) 2 Cu[N(CN) 2 ]Cl has been suggested as a prototypical charge-order-driven antiferromagnet. In this paper, we summarize and discuss several key results, including some not reported previously, obtained in search to clarify the competition of these two ground states. The origin of anomalous dielectric response found at low temperatures in all three salts is also discussed. We conclude by pointing out the relevant new insights into the role of frustration and random disorder in the suppression of magnetic ordering and formation of the spin liquid state. |
| Databáze: | OpenAIRE |
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