<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi /></mml:mrow><mml:mrow><mml:mn>13</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi>C</mml:mi><mml:mi /><mml:mi>NMR</mml:mi></mml:math>Measurements of the High-Magnetic-Field, Low-Temperature Phases of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo>(</mml:mo><mml:mi>TMTTF</mml:mi><mml:mo>)</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mi /></mml:mrow><mml:mrow><mml:m

Brown, Stuart; Clark, W. G.; Zámborszky, F.; Klemme, B.; Kriza, G.; Alavi, B.; Merlic, Craig A.; Kuhns, P. L.; Moulton, W. G.

doi:10.1103/physrevlett.80.5429

Cited by 28 publications

(19 citation statements)

References 27 publications

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“…Recent NMR experiments demonstrated that the critical field for creating magnetic excitations in (TMTTF) 2 PF 6 is B c Ϸ19 T. 6 For Bу19 T, the 13 C line in spin-labeled crystals broadens considerably, which we have interpreted as the signature for a pinned soliton lattice. However, for proper line-shape analysis in terms of a soliton model, it is required to have a knowledge of the soliton density.…”

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confidence: 72%

High-field magnetization of the spin-Peierls compound(TMTTF)2PF6

et al. 1999

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High-field cantilever-force magnetization measurements of the spin-Peierls compound (TMTTF) 2 PF 6 indicate that the uniform phase spin susceptibility is s Ϸ(4.5Ϯ1)ϫ10 Ϫ4 emu/mol and is nearly the same magnitude as the molecular diamagnetic contribution. Magnetic-field sweeps in the spin-Peierls dimerized phase show that the onset of magnetic excitations is near B c Ϸ19 T, with large hysteresis developing at temperatures Tр3 K.

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confidence: 72%

High-field magnetization of the spin-Peierls compound(TMTTF)2PF6

et al. 1999

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“…In the hydrogenated (TMTTF) 2 PF 6 salt, NMR and magnetization measurements have indeed revealed some quadratic dependence [23], but the entire range of low field values for T SP (H) was not available. From our field dependent microwave data, the phase diagram including the D12 and H12 salts is presented in Fig.…”

Section: Resultsmentioning

confidence: 99%

Microwave dielectric study of spin-Peierls and charge-ordering transitions in(TMTTF)2PF6salts

et al. 2010

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We report a study of the 16.5 GHz dielectric function of hydrogenated and deuterated organic salts (TMTTF)2PF6. The temperature behavior of the dielectric function is consistent with short-range polar order whose relaxation time decreases rapidly below the charge ordering temperature. If this transition has more a relaxor character in the hydrogenated salt, charge ordering is strengthened in the deuterated one where the transition temperature has increased by more than thirty percent. Anomalies in the dielectric function are also observed in the spin-Peierls ground state revealing some intricate lattice effects in a temperature range where both phases coexist. The variation of the spin-Peierls ordering temperature under magnetic field appears to follow a mean-field prediction despite the presence of spin-Peierls fluctuations over a very wide temperature range in the charge ordered state of these salts.

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“…In (TMTTF) 2 PF 6 T SP decreases as H 2 [132] and above 19T this salt undergoes a phase transition to an incommensurate soliton-like structure [133,134].…”

Section: Basic Featuresmentioning

confidence: 98%

Structural Aspects of the Bechgaard and Fabre Salts: An Update

Pouget

2012

Crystals

107

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Abstract:We review structural aspects of the Bechgaard and Fabre salts in relationship with their electronic, magnetic and superconducting properties. We emphasize the role of bond and charge modulations of the quarter filled organic stack in the various instabilities and ground states exhibited by these salts. A special consideration is also devoted to the influence of anions and methyl groups in these processes. In particular we point out the importance of the anions in achieving the inter-stack coupling by either direct or indirect (via the polarization of the methyl group cavities) interactions with the donors. In this framework we discuss the role of anions and methyl group disorders in the inhibition of the divergence of the high temperature bond order wave instability of the Bechgaard salts. We analyze the modulation in the magnetic ground states by considering explicitly the coupling of the magnetization with structural degrees of freedom. We consider the role of the anions and methyl groups in stabilizing the charge ordering pattern in the Fabre salts. We also discuss the spin-Peierls transition of the Fabre salts in relation with the charge ordering transition and the adiabaticity of the phonon field. We review the anion ordering transitions by considering more particularly the influence of the ordering process on the electronic structure and on the ground states which results. In this framework we show that the texture of the anion ordered structure has direct consequences on the superconducting properties of (TMTSF) 2 ClO 4 . Finally we conclude on the essential implication of the structural degrees of freedom on the generic phase diagram of the Bechgaard and Fabre salts. OPEN ACCESSCrystals 2012, 2 467

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13CNMRMeasurements of the High-Magnetic-Field, Low-Temperature Phases of(TMTTF)

Cited by 28 publications

References 27 publications

High-field magnetization of the spin-Peierls compound(TMTTF)2PF6

High-field magnetization of the spin-Peierls compound(TMTTF)2PF6

Microwave dielectric study of spin-Peierls and charge-ordering transitions in(TMTTF)2PF6salts

Structural Aspects of the Bechgaard and Fabre Salts: An Update

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