Quasi-one-dimensional superconductors in strong magnetic field

Dupuis, N.; Montambaux, Gilles; Melo, C. A. R. Sá de

doi:10.1103/physrevlett.70.2613

Cited by 151 publications

(210 citation statements)

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“…Early experiments [2][3][4][5], performed on the Q1D superconductors (TMTSF) 2 X (X=PF 6 and ClO 4 ), provided hints of their unconventional nature. In addition to possible triplet pairing [6][7][8][9][10], it was proposed that Q1D superconductors can demonstrate such unusual phenomena as the reentrant superconductivity [7][8][9][10], Larkin-Ovchinnikov-Fulde-Ferrell (LOFF) phase [2, [7][8][9][10][11][12][13][14][15], and hidden reentrant superconductivity [15]. Although triplet superconducting pairing was considered as the most probable mechanism for many years, more recent experiments [12,16] and theories [15,17] are in favor of a d-wave like superconducting pairing in the (TMTSF) 2 ClO 4 conductor.…”

Section: Phenomenological Approach To the Possible Existence Of A Trimentioning

confidence: 99%

Possible triplet superconductivity in the quasi-one-dimensional conductor Li0.9Mo6O17

Lebed

Sepper

2013

Phys. Rev. B

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Section: Phenomenological Approach To the Possible Existence Of A Trimentioning

confidence: 99%

Possible triplet superconductivity in the quasi-one-dimensional conductor Li0.9Mo6O17

Lebed

Sepper

2013

Phys. Rev. B

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“…[18] and elaborated in Refs. [19][20][21][22][23]. In addition, recent measurements of the upper critical fields in (TMTSF) 2 ClO 4 superconductor [13,14] have revealed another unusual property -a novel superconducting phase, which appears when a magnetic field is applied along the conducting chains, H a.…”

mentioning

confidence: 99%

“…[18,[20][21][22][23]. There are some experimental data in a favor of the existence of the LOFF phase in quasi-two-dimensional (Q2D) superconductors κ-(ET) 2 Cu(NCS) 2 [34,35], λ-(BETS) 2 GaCl 4 [36], and λ-(BETS) 2 FeCl 4 [37].…”

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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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“…Similar to the phase coexistence already discussed, the effective magnetic field seen by the superconducting regions could be much lower than the applied field. This possibility has also been extensively discussed in the framework of the FFLO model to explain the possibility of reentrant superconductivity for fields larger than the paramagnetic (Pauli) limit [205,206]. An 1 NMR Knight shift data coupled with resistance measurements obtained in ref.…”

Section: Pf (Tmtsf)mentioning

confidence: 99%

One Dimensional Organic Superconductors

Jérôme

Pasquier

Frontiers in Superconducting Materials

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The new state of matter (superconductivity) has been discovered somehow unexpectedly in mercury with a critical temperature of T c = 4.15K by Kamerlingh Onnes in 1911 just after he had mastered the liquefaction of helium [1]. However, the phenomenon of superconductivity in particular its T c , is strongly dependent on the material in which it is to be observed. Therefore, over the years a lot of new metals and intermetallic compounds have been discovered with increased values of T c reaching a maximum which was apparently leveling off at about 24 K in the fifties, see figure 1. The absence of any satisfactory theory until 1957 did not prevent the applications of superconductivity which developed after World War Two but all these applications were bound to the use of liquid helium as the cooling agent which is necessary to stabilize the superconducting state. It is only in 1986 that totally new types of copper oxides discovered by Bednorz and Müller led to drastically higher T c [2]. This remarkable discovery was actually an outcome of the quest for new materials able to show superconductivity under conditions as close as possible to ambient temperature. As to the possibility of superconductivity in materials other than metals, F.London in 1937 had been the first to suggest that aromatic compounds under magnetic fields might exhibit a permanent current running along aromatic ring systems (anthracene, naphtalene,...) under magnetic field [3].

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Quasi-one-dimensional superconductors in strong magnetic field

Cited by 151 publications

References 9 publications

Possible triplet superconductivity in the quasi-one-dimensional conductor Li0.9Mo6O17

Possible triplet superconductivity in the quasi-one-dimensional conductor Li0.9Mo6O17

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

One Dimensional Organic Superconductors

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