2009
DOI: 10.1103/physrevlett.102.257001
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Phase Diagram of Quarter-Filled Band Organic Salts[EDTTTFCONMe2]2X,

Abstract: An investigation of the P/T phase diagram of the quarter-filled organic conductors, [EDT-TTF-CONMe 2 ] 2 X is reported on the basis of transport and NMR studies of two members, X=AsF 6 and Br of the family. The strongly insulating character of these materials in the low pressure regime has been attributed to a remarkably stable charge ordered state confirmed by 13 C NMR and the only existence of 1/4 Umklapp e-e scattering favoring a charge ordering instead of the 1D Mott localization seen in (TM) 2 X which are… Show more

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Cited by 33 publications
(38 citation statements)
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“…In spite of the different structures the high temperature limit of phase diagrams of (EDT − TTF − CONMe 2 ) 2 AsF 6 and (TM) 2 X are fairly similar [76].…”
Section: The Generic Diagram Studied By Transportmentioning
confidence: 88%
“…In spite of the different structures the high temperature limit of phase diagrams of (EDT − TTF − CONMe 2 ) 2 AsF 6 and (TM) 2 X are fairly similar [76].…”
Section: The Generic Diagram Studied By Transportmentioning
confidence: 88%
“…Here, zV ⊥ correspond to the inverse of P ; the effect of P acts strongly on transfer integrals, therefore the "effective" Coulomb interaction becomes smaller. Now, several Q1D compounds without dimerization have been synthesized where a CO transition is suggested, such as (o-DMTTF) 2 Br [55] and (EDT-TTF-CONMe 2 ) 2 X [X = AsF 6 and Br] [56,57]. On the other hand, materials known from early days such as the compounds showing SP transition, MEM-(TCNQ) 2 and (BCPTTF) 2 X (X = PF 6 , AsF 6 ) [58][59][60], might be interesting to revisit with renewed understandings.…”
Section: Discussionmentioning
confidence: 99%
“…Recently, several Q1D compounds without dimerization have been synthesized where a CO transition is suggested, such as (o-DMTTF) 2 Br 42) and (EDT-TTF-CONMe) 2 X [X= AsF 6 and Br]. 43,44) There, as in (DI-DCNQI) 2 Ag at ambient pressure, the anomaly at T = T CO in ρ(T ) is not clearly seen possibly due to the strong fluctuation which may be underestimated in our calculation due to the interchain mean-field treatment. A noticeable point is that in (o-DMTTF) 2 Br, 42) χ σ (T ) shows a steep decrease at around T = T CO , distinct from the other Q1D materials above with a smooth variation there, whose origin remains unclear.…”
Section: Summary and Discussionmentioning
confidence: 99%