An Organic Spin‐Ladder Molecular Material

Rovira, Concepció; Veciana, Jaume; Ribera, E.; Tarrés, Judit; Canadell, Enric; Rousseau, Roger; Mas, M.; Molins, Elı́es; Almeida, Manuel; Henriques, R.T.; Morgado, Jorge; Schoeffel, Jean Philippe; Pouget, J.P.

doi:10.1002/anie.199723241

Cited by 58 publications

(47 citation statements)

References 21 publications

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“…The suppression of the SDW ground state under pressure restores the metallic state which is thus subject to superconductivity [1,2]. To complete this survey of different classes of organic 1D system, let us briefly mention very original 2:1 series of quasi-1D organic systems based on acceptors incorporating a metal transition element M. The corresponding salts, in presence of perylene or of TTF based donor, achieve segregated metallic and magnetic stacks [Per 2 -M(mnt) 2 series [4]] or spin ladders [(DT-TTF) 2 -M(mnt) 2 series [5]]. Finally, let us mention conducting and even superconducting 2:1 (M(dmit) 2 ) 2 Y or charge transfer TTF(M(dmit) 2 ) 2 systems [2], where the electronic structure of the M(dmit) 2 acceptor, composed of dmit side groups weakly coupled through a central M atom, involves both HOMO and LUMO electronic states [6].…”

Section: Introductionmentioning

confidence: 99%

Structural Aspects of the Bechgaard and Fabre Salts: An Update

Pouget

2012

Crystals

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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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Section: Introductionmentioning

confidence: 99%

Structural Aspects of the Bechgaard and Fabre Salts: An Update

Pouget

2012

Crystals

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107

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“…The number of perylene stacks is twice that of M(mnt) 2 stacks but the inter-stack perylene-perylene interactions are extremely small compared with the strong intra-stack interactions and, as a consequence, these compounds are metals with a very strong 1D character. In order to establish interactions between pairs of donor stacks and, hence, achieve a ladder-type molecular organic compound, previously in our group a new family of salts was prepared replacing the perylene molecules with the donor dithiopheno-tetrathiafulvalene (DT-TTF), which incorporates six peripheral sulfur atoms (6). Depending on the nature of the transition metal M, different conducting and magnetic properties were observed.…”

Section: Introductionmentioning

confidence: 99%

Two New Families of Charge Transfer Solids Based on [M(mnt)2]n− and the Donors BMDT-TTF and EDT-TTF: Conducting and Magnetic Properties

Mas‐Torrent

Alves

Lopes

et al. 2002

Journal of Solid State Chemistry

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“…, is also described by a spin-ladder model, 16) but there has been no experimental evidence of its realization, because the strong exchange interaction makes it difficult to study its magnetization process.…”

Section: Introductionmentioning

confidence: 99%

Magnetization Process of the S = 1/2 Two-Leg Organic Spin-Ladder Compound BIP-BNO

et al. 2017

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We have measured the magnetization of the organic compound BIP-BNO (3,5'-bis(N-tert-butylaminoxyl)-3',5-dibromobiphenyl) up to 76 T where the magnetization is saturated. The S = 1/2 antiferromagnetic Heisenberg two-leg spin-ladder model accounts for the obtained experimental data regarding the magnetization curve, which is clarified using the quantum Monte Carlo method. The exchange constants on the rung and the side rail of the ladder are estimated to be Jrung/kB = 65.7 K and Jleg/kB = 14.1 K, respectively, deeply in the strong coupling region: Jrung/Jleg > 1.

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An Organic Spin‐Ladder Molecular Material

Cited by 58 publications

References 21 publications

Structural Aspects of the Bechgaard and Fabre Salts: An Update

Structural Aspects of the Bechgaard and Fabre Salts: An Update

Two New Families of Charge Transfer Solids Based on [M(mnt)2]n− and the Donors BMDT-TTF and EDT-TTF: Conducting and Magnetic Properties

Magnetization Process of the S = 1/2 Two-Leg Organic Spin-Ladder Compound BIP-BNO

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