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Article

Electrodynamics in Organic Dimer Insulators Close to Mott Critical Point

1
Institut za fiziku, Bijenička 46, HR-10000 Zagreb, Croatia
2
Faculty of Civil Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia
3
Rudjer Bošković Institute, Bijenička 56, HR-10000 Zagreb, Croatia
4
1. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart, Germany
*
Authors to whom correspondence should be addressed.
Crystals 2018, 8(5), 190; https://doi.org/10.3390/cryst8050190
Received: 26 March 2018 / Revised: 18 April 2018 / Accepted: 18 April 2018 / Published: 27 April 2018
(This article belongs to the Special Issue Advances in Organic Conductors and Superconductors)
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. View Full-Text
Keywords: strongly correlated systems; mott insulators; quantum spin liquid; dielectric properties; vibrational properties; density functional theory strongly correlated systems; mott insulators; quantum spin liquid; dielectric properties; vibrational properties; density functional theory
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MDPI and ACS Style

Pinterić, M.; Rivas Góngora, D.; Rapljenović, Ž.; Ivek, T.; Čulo, M.; Korin-Hamzić, B.; Milat, O.; Gumhalter, B.; Lazić, P.; Sanz Alonso, M.; Li, W.; Pustogow, A.; Gorgen Lesseux, G.; Dressel, M.; Tomić, S. Electrodynamics in Organic Dimer Insulators Close to Mott Critical Point. Crystals 2018, 8, 190. https://doi.org/10.3390/cryst8050190

AMA Style

Pinterić M, Rivas Góngora D, Rapljenović Ž, Ivek T, Čulo M, Korin-Hamzić B, Milat O, Gumhalter B, Lazić P, Sanz Alonso M, Li W, Pustogow A, Gorgen Lesseux G, Dressel M, Tomić S. Electrodynamics in Organic Dimer Insulators Close to Mott Critical Point. Crystals. 2018; 8(5):190. https://doi.org/10.3390/cryst8050190

Chicago/Turabian Style

Pinterić, Marko, David Rivas Góngora, Željko Rapljenović, Tomislav Ivek, Matija Čulo, Bojana Korin-Hamzić, Ognjen Milat, Branko Gumhalter, Predrag Lazić, Miriam Sanz Alonso, Weiwu Li, Andrej Pustogow, Guilherme Gorgen Lesseux, Martin Dressel, and Silvia Tomić. 2018. "Electrodynamics in Organic Dimer Insulators Close to Mott Critical Point" Crystals 8, no. 5: 190. https://doi.org/10.3390/cryst8050190

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