Why do Physicists Love Charge-Transfer Salts?

Singleton, John

doi:10.1006/jssc.2002.9766

Cited by 36 publications

(26 citation statements)

References 57 publications

(127 reference statements)

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“…A few theoretical investigations have questioned the use of this model on various grounds, such as a very weak degree of dimerization 4 or the absence of superconductivity. 5 Our dielectric constant measurements in κ(BEDT-TTF) 2 6 where BEDT-TTF stands for Bis(ethylenedithio)tetrathiafulvalene, revealed that the temperature and frequency dependence of was similar to that of a relaxor ferroelectric compound. This result, combined with the 6-K anomaly found in thermal expansion, 7 specific heat, 8 and thermal conductivity 9 data, has encouraged 10 and inspired 11,12 subsequent theoretical work focusing on the charge degree of freedom within the dimer unit.…”

Section: Introductionmentioning

confidence: 84%

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Disordered conduction in single-crystalline dimer Mott compounds

et al. 2013

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We study the temperature and frequency dependence of the dielectric constant and the ac conductivity in the dimer Mott insulator family β-type Pd(dmit) 2 (where dmit denotes 1,3-dithiole-2-thione-4,5-dithiolate). We find that all compounds within this family have relaxorlike dielectric relaxation with a Curie-Weiss increase in the dielectric constant with decreasing temperature. An analysis of the dielectric data shows a clear relation between electronic correlation and the dipole-dipole interaction; also, geometrical frustration appears to weaken this interaction. Furthermore, the dc and ac conductivities are shown to be closely correlated and follow the same universal ac conductivity as disordered solids.

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Section: Introductionmentioning

confidence: 84%

“…The typical mean free path of the charge is in the neighborhood of thousands of angstroms at the lowest temperatures. 2 As such, the electronic nature of the insulating states of those compounds is considered to be very homogeneous, as only a very low level of crystallographic defects results in such high values of the mean free path.…”

Section: Introductionmentioning

confidence: 99%

Disordered conduction in single-crystalline dimer Mott compounds

et al. 2013

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“…for h = 0, we can express the singular part of the expansivity in terms of derivatives of the scaling function (x). Differentiating equation (16) with respect to t and h, one obtains [4] …”

Section: Scaling Ansatz For the Mott Metal-insulator Transitionmentioning

confidence: 99%

“…The electronic properties of κ-(BEDT-TTF) 2 X chargetransfer salts have been reported in various review articles, see, for instance [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Here we focus on topics linked to dilatometric studies of the κ-(BEDT-TTF) 2 X salts.…”

Section: Introductionmentioning

confidence: 99%

Probing the Mott physics inκ-(BEDT-TTF)₂X salts via thermal expansion

Souza

Bartosch

2015

J. Phys.: Condens. Matter

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In the field of interacting electron systems the Mott metal-to-insulator (MI) transition represents one of the pivotal issues. The role played by lattice degrees of freedom for the Mott MI transition and the Mott criticality in a variety of materials are current topics under debate. In this context, molecular conductors of the κ-(BEDT-TTF) 2 X type constitute a class of materials for unraveling several aspects of the Mott physics. In this review, we present a synopsis of literature results with focus on recent expansivity measurements probing the Mott MI transition in this class of materials. Progress in the description of the Mott critical behavior is also addressed.

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“…Recently, new applications of TTF and its derivatives in supramolecular [1–3] and materials chemistry [4–6] have been developed by TTF block building more flexible than was previously appreciated.…”

Section: Introductionmentioning

confidence: 99%

New Unsymmetrically Benzene-Fused Bis (Tetrathiafulvalene): Synthesis, Characterization, Electrochemical Properties and Electrical Conductivity of Their Materials

Abbaz

Bendjeddou

Gouasmia

et al. 2014

IJMS

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The synthesis of new unsymmetrically benzene-fused bis (tetrathiafulvalene) has been carried out by a cross-coupling reaction of the respective 4,5-dialkyl-1,3-dithiole- 2-selenone 6–9 with 2-(4-(p-nitrophenyl)-1,3-dithiole-2-ylidene)-1,3,5,7-tetrathia-s-indacene- 6-one 5 prepared by olefination of 4-(p-nitrophenyl)-1,3-dithiole-2-selenone 3 and 1,3,5,7-tetrathia-s-indacene-2,6-dione 4. The conversion of the nitro moiety 10a–d to amino 11a–d then dibenzylamine 12a–d groups respectively used reduction and alkylation methods. The electron donor ability of these new compounds has been measured by cyclic voltammetry (CV) technique. Charge transfer complexes with tetracyanoquino-dimethane (TCNQ) were prepared by chemical redox reactions. The complexes have been proven to give conducting materials.

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Why do Physicists Love Charge-Transfer Salts?

Cited by 36 publications

References 57 publications

Disordered conduction in single-crystalline dimer Mott compounds

Disordered conduction in single-crystalline dimer Mott compounds

Probing the Mott physics inκ-(BEDT-TTF)₂X salts via thermal expansion

New Unsymmetrically Benzene-Fused Bis (Tetrathiafulvalene): Synthesis, Characterization, Electrochemical Properties and Electrical Conductivity of Their Materials

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Why do Physicists Love Charge-Transfer Salts?

Cited by 36 publications

References 57 publications

Disordered conduction in single-crystalline dimer Mott compounds

Disordered conduction in single-crystalline dimer Mott compounds

Probing the Mott physics inκ-(BEDT-TTF)2X salts via thermal expansion

New Unsymmetrically Benzene-Fused Bis (Tetrathiafulvalene): Synthesis, Characterization, Electrochemical Properties and Electrical Conductivity of Their Materials

Contact Info

Product

Resources

About

Probing the Mott physics inκ-(BEDT-TTF)₂X salts via thermal expansion