Impurity-controlled superconductivity/spin density wave interplay in the organic superconductor: (TMTSF)
                    <sub>2</sub>
                    ClO
                    <sub>4</sub>

Joo, N.; Auban‐Senzier, Pascale; Pasquier, Claude; Jérôme, D.; Bechgaard, K.

doi:10.1209/epl/i2005-10281-1

Cited by 56 publications

(72 citation statements)

References 31 publications

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“…Below, we consider a singlet d-wave scenario of superconductivity in (TMTSF) 2 ClO 4 conductor, which is in agreement with the experiments [4][5][6]8]. For this purpose we introduce the following d-wave like LOFF order parameter,…”

mentioning

confidence: 56%

“…From the beginning, it was clear that their superconducting properties were unconventional. Indeed, it was found [4] that superconductivity was destroyed by non-magnetic impurities, which was recently unequivocally confirmed [5]. In addition, it was shown [6] that the conventional for s-wave superconductivity Hebel-Slichter peak was absent in the NMR experiments.…”

mentioning

confidence: 92%

“…In addition, it was shown [6] that the conventional for s-wave superconductivity Hebel-Slichter peak was absent in the NMR experiments. Note that the experimental results [4][5][6] provide strong arguments that superconducting order parameter changes its sign on a quasi-one-dimensional (Q1D) Fermi surface (FS) of (TMTSF) 2 X superconductors. On the other hand, they do not contain information about a spin-part of a superconducting order parameter and, thus, do not distinguish between singlet and triplet pairings.…”

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confidence: 99%

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Column density and temperature effects on narrow resonance structures in atomic photoionization and photoabsorption

Yih

Luo

et al. 2010

Phys. Rev. A

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We consider a formation of the Larkin-Ovchinnikov-Fulde-Ferrell (LOFF) phase in a quasi-onedimensional (Q1D) conductor in a magnetic field, parallel to its conducting chains, where we take into account both the paramagnetic spin-splitting and orbital destructive effects against superconductivity. We show that, due to a relative weakness of the orbital effects in a Q1D case, the LOFF phase appears in (TMTSF)2ClO4 superconductor for real values of its Q1D band parameters. We compare our theoretical calculations with the recent experimental data by Y. Maeno's group [S. Yonezawa et al., Phys. Rev. Lett. 100, 117002 (2008)] and show that there is a good qualitative and quantitative agreement between the theory and experimental data.PACS numbers: 74.70. Kn, 74.20.Rp, 74.25.Op Since a discovery of superconductivity in organic (TMTSF) 2 X conductors (X=PF 6 and ClO 4 ) [1], their physical properties have been intensively studied both experimentally and theoretically [2,3]. From the beginning, it was clear that their superconducting properties were unconventional. Indeed, it was found [4] that superconductivity was destroyed by non-magnetic impurities, which was recently unequivocally confirmed [5]. In addition, it was shown [6] that the conventional for s-wave superconductivity Hebel-Slichter peak was absent in the NMR experiments. Note that the experimental results [4][5][6] provide strong arguments that superconducting order parameter changes its sign on a quasi-one-dimensional (Q1D) Fermi surface (FS) of (TMTSF) 2 X superconductors. On the other hand, they do not contain information about a spin-part of a superconducting order parameter and, thus, do not distinguish between singlet and triplet pairings. At the moment, the problem about a spin part of a superconducting order parameter in (TMTSF) 2 X conductors is still controversial. Indeed, early measurements of the Knight shift in (TMTSF) 2 PF 6 conductor [7] in a magnetic field H = 1.43 T showed that spin susceptibility was unchanged through the superconducting transition. These data were interpreted as an evidence for triplet superconductivity. On the other hand, more recent Knight shift data in (TMTSF) 2 ClO 4 conductor [8], obtained in a magnetic field H = 0.957 T , were interpreted in favor of a singlet superconducting pairing.Another unconventional feature of superconductivity in (TMTSF) 2 X conductors is very large upper critical fields for a magnetic field parallel to their conducting planes and perpendicular to their conducting chains, H b ′ [9-14]. These fields exceed both the quasi-classical orbital upper critical field [15,16] and so-called Clogston paramagnetic limit [17]. Note that in (TMTSF) 2 PF 6 superconductor H b ′ c2 is very large [10,11] due to a formation of domain walls in the vicinity of antiferromagnetic phase. In contrast, in (TMTSF) 2 ClO 4 conductor large upper critical field H b ′ c2 [12-14] is prescribed to 3D → 2D dimensional crossover in a magnetic field, predicted in Ref. [18] and elaborated in Refs. [19][20][21][22][23]. In addi...

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confidence: 56%

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confidence: 92%

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confidence: 99%

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Column density and temperature effects on narrow resonance structures in atomic photoionization and photoabsorption

Yih

Luo

et al. 2010

Phys. Rev. A

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“…This Phase segregation has been also induced by X-ray irradiation [52] and chemical substitution [17,18] in (TMTSF) 2 ClO 4 and by hydrostatic pressure in (TMTSF) 2 PF 4 6 [7][8][9].…”

Section: Some Experimental Factsmentioning

confidence: 99%

“…For a given irradiation amount, we can deduce the mean free path as l = l * ρ * 0 ρ0 since ρ 0 is proportional to the inverse of the inplane mean free path l . It is worth noting that the determination of the the inplane scattering rate or the inplane mean free path from the interplane residual resistivity has been used by Joo et al [18,19] in the case of the quasi-one dimensional organic superconductor (TMTSF) 2 ClO 4 to fit, using the Abrikosov-Gorkov formula, their experimental data dealing with the dependence of the superconducting transition temperature with the interplane residual resistivity. The result of Joo et al was taken as an evidence of the unconventional character of the superconducting order parameter in (TMTSF) 2 ClO 4 .…”

Section: The Case Of (Tmtsf)2clo4mentioning

confidence: 99%

Inhomogeneous superconductivity in organic conductors: the role of disorder and magnetic field

Haddad¹,

Charfi‐Kaddour²,

Pouget³

2011

J. Phys.: Condens. Matter

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Several experimental studies have shown the presence of spatially inhomogeneous phase coexistence of superconducting and non superconducting domains in low dimensional organic superconductors. The superconducting properties of these systems are found to be strongly dependent on the amount of disorder introduced in the sample regardless of its origin. The suppression of the superconducting transition temperature Tc shows clear discrepancy with the result expected from the Abrikosov-Gor'kov law giving the behavior of Tc with impurities. Based on the time dependent Ginzburg-Landau theory, we derive a model to account for the striking feature of Tc in organic superconductors for different types of disorder by considering the segregated texture of the system. We show that the calculated Tc quantitatively agrees with experiments. We also focus on the role of superconducting fluctuations on the upper critical fields Hc2 of layered superconductors showing slab structure where superconducting domains are sandwiched by non-superconducting regions. We found that Hc2 may be strongly enhanced by such fluctuations.

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Organic quantum materials: A review

Wang

Zhang

2023

SmartMat

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Interests in organic quantum materials (OQMs) have been explosively growing in the field of condensed physics of matter due to their rich chemistry and unique quantum properties. They are strongly correlated systems and show novel electromagnetic performance such as high‐temperature superconducting, quantum sensing, spin electronics, quantum dots, topological insulating, quantum Hall effects, spin liquids, qubits, and so forth, which exhibit promising prospects in information communication and thus facilitate the construction of a modern intelligent society. This article reviews recent developments in the research on the electromagnetic characteristics of OQMs. We mainly give an overview on the progress of superconductors and quantum spin liquids based on organic materials and describe their possible mechanisms. Numerous experimental findings exhibit new exciton interactions and provide insights into exotic electronic properties. Finally, their association and strategies for realizing multiple quantum states in one system are discussed.

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Impurity-controlled superconductivity/spin density wave interplay in the organic superconductor: (TMTSF) ₂ ClO ₄

Cited by 56 publications

References 31 publications

Column density and temperature effects on narrow resonance structures in atomic photoionization and photoabsorption

Column density and temperature effects on narrow resonance structures in atomic photoionization and photoabsorption

Inhomogeneous superconductivity in organic conductors: the role of disorder and magnetic field

Organic quantum materials: A review

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Impurity-controlled superconductivity/spin density wave interplay in the organic superconductor: (TMTSF) 2 ClO 4

Cited by 56 publications

References 31 publications

Column density and temperature effects on narrow resonance structures in atomic photoionization and photoabsorption

Column density and temperature effects on narrow resonance structures in atomic photoionization and photoabsorption

Inhomogeneous superconductivity in organic conductors: the role of disorder and magnetic field

Organic quantum materials: A review

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Product

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Impurity-controlled superconductivity/spin density wave interplay in the organic superconductor: (TMTSF) ₂ ClO ₄