journal article·2001-04

Recent aspects of organic metals and superconductors

J Wosnitza

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Abstract

Some of the recent developments in the field of organic charge-transfer salts are reviewed. In particular, novel aspects advancing a better understanding of the competing metallic and magnetic ground states in the quasi-one and quasi-two-dimensional organic conductors are presented. A number of challenging experiments rewarded us with new insights in some principal electronic properties of low-dimensional metals and revealed features of the metallic state which are not explicable by the usual Fermi-liquid theory. Finally, new highlights occurring in the vortex state and some recent perspectives on the nature of the superconducting state are discussed.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Organic and Molecular Conductors Research · Magnetism in coordination complexes · N-Heterocyclic Carbenes in Organic and Inorganic Chemistry

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (71)

Show source-provided references
1. Ishiguro · 1998
2. Williams · 1992
3. Wosnitza · 1996
4. Structural genealogy of BEDT–TTF-based organic conductors I. Parallel molecules: β and β′ phases10.1246/bcsj.71.2509 ↗
5. Structural genealogy of BEDT–TTF-based organic conductors II. Θ, α, and κ phases10.1246/bcsj.72.179 ↗
6. Structural genealogy of BEDT–TTF-based organic conductors III. Twisted molecules: δ and α′ phases10.1246/bcsj.72.2011 ↗
7. A superconducting field-effect switch10.1126/science.288.5466.656 ↗
8. Fractional quantum Hall effect in organic molecular semiconductors10.1126/science.288.5475.2338 ↗
9. The physics of organic superconductors10.1126/science.252.5012.1509 ↗
10. Superconducting transition of (TMTTF)2PF6 above 50 kbar10.1021/ja0001254 ↗
11. Spin-density-wave transition in (TMTSF)2PF6 under uniaxial strain10.1143/JPSJ.69.2164 ↗
12. Spin-density-wave transition in quasi-one-dimensional system under uniaxial pressure10.1143/JPSJ.69.997 ↗
13. On the low-temperature states of highly correlated BETS conductors10.1016/S0379-6779(98)00245-8 ↗
14. A new κ-type organic superconductor based on BETS molecules, κ-(BETS)2GaBr4 (BETS=bis(ethylenedithio)tetraselenafulvalene)10.1039/a908789c ↗
15. Organic superconductors/semiconductors/CT salts10.1016/S1359-0286(97)80086-1 ↗
16. Antiferromagnetic organic metal exhibiting superconducting transition, κ-(BETS)2FeBr4 (BETS=Bis(ethylenedithio)tetraselenafulvalene)10.1021/ja990894r ↗
17. Magnetic properties of λ-BETS2(FexGa1−x)Cl4 exhibiting a superconductor-to-insulator transition (0.35<x<0.5)10.1103/PhysRevB.61.111 ↗
18. Studies of quasi-two-dimensional organic conductors based on BEDT–TTF using high magnetic fields10.1088/0034-4885/63/8/201 ↗
19. Magnetic Field-induced phase diagram of the organic conductor α-(BEDT–TTF)2KHg(SCN)410.1134/1.568339 ↗
20. Competition between Pauli and orbital effects in a charge-density wave system10.1103/PhysRevB.62.10008 ↗
21. Bjelis A, Zanchi D, Montambaux G. Pauli and orbital effects of magnetic field on charge density waves. J de Phys IV 1999;9:Pr10-203–205. The magnetic phase diagram of charge-density-wave states in 1D metals is derived.10.1051/jp4:19991051 ↗
22. Microscopic evidence for a partially gapped density wave state in α-(BEDT–TTF)2KHg(SCN)4 in high magnetic fields10.1016/S0038-1098(99)00017-4 ↗
23. Destabilization of a charge-density wave by an oscillatory chemical potential10.1103/PhysRevLett.83.1395 ↗
24. Charge ordering in organic ET compounds10.1143/JPSJ.69.805 ↗
25. Charge ordering in a quasi-two-dimensional organic conductor10.1103/PhysRevB.62.R7679 ↗
26. Novel pressure-induced 2kF CDW state in organic low-dimensional compound θ-(BEDT–TTF)2CsCo(SCN)410.1143/JPSJ.68.2654 ↗
27. Charge ordering phase transition in the quasi-one-dimensional conductor (TMTTF)2AsF610.1088/0953-8984/12/26/103 ↗
28. Jerome D. One-dimensional organic superconductors: beyond the Fermi-liquid description. J de Phys IV 2000;10:Pr3-69–79.10.1051/jp4:2000307 ↗
29. Field-induced electronic phase transitions in high magnetic fields10.1088/0953-8984/10/49/019 ↗
30. Field scaling and exponential temperature dependence of the magnetoresistance in (TMTSF)2PF610.1103/PhysRevB.60.R8434 ↗
31. Electronic specific heat at the boundary region of the metal–insulator transition in the two-dimensional electronic system κ-(BEDT–TTF)2Cu[N(CN)2]Br10.1103/PhysRevB.61.R16295 ↗
32. Nonmetal to metal crossover and ethylene ordering in the organic superconductor κ-(BEDT–TTF)2Cu[N(CN)2]Br10.1103/PhysRevB.59.3841 ↗
33. ESR study of the ordering transformation in κ-(BEDT–TTF)2Cu[N(CN)2]Br10.1103/PhysRevB.61.3278 ↗
34. Glass transition in the organic superconductor with the highest Tc under ambient pressure, κ-(ET)2Cu[N(CN)2]Br10.1016/S0038-1098(99)00251-3 ↗
35. Temporal processes in a polymeric anion-based organic superconductor10.1103/PhysRevB.60.9309 ↗
36. Evidence for fast oscillations vanishing at the spin-density-wave–metal transition in Bechgaard salts10.1103/PhysRevB.61.8913 ↗
37. Quantum oscillations in (DMET–TSeF)2AuCl210.1103/PhysRevB.60.R15005 ↗
38. Direct observation of reconstructed Fermi surfaces of (TMTSF)2ClO4 utilizing the third angular effect of magnetoresistance10.1143/JPSJ.68.3142 ↗
39. Two rapid oscillations in the magnetoresistance in the field-induced spin-density-wave state of (TMTSF)2ClO410.1103/PhysRevB.61.11649 ↗
40. Fermi surface in the new organic quasi-two-dimensional metal α-(BETS)2TlHg(SeCN)410.1134/1.559135 ↗
41. Investigations of the Fermi surface of a new organic metal: (BEDT–TTF)4[Ni(dto)2]10.1209/epl/i2000-00329-2 ↗
42. Angle-dependent magnetoquantum oscillations in κ-(BEDT–TTF)2Cu[N(CN)2]Br10.1103/PhysRevB.60.R16259 ↗
43. Magnetotransport studies of the Fermi surface in the organic superconductor κ-(BEDT–TTF)2Cu[N(CN)2]Br10.1103/PhysRevB.59.12370 ↗
44. Indications for electron localization effects in the strongly 2D organic metal κ-(BEDT–TTF)2I3 as observed by Shubnikov–de Haas experiments10.1209/epl/i1999-00353-8 ↗
45. Quasi-two-dimensional spin-split Fermi liquid behavior of κ-(BEDT–TTF)2I3 in strong magnetic fields10.1103/PhysRevB.58.10248 ↗
46. Two-dimensional Fermi liquid with fixed chemical potential10.1103/PhysRevB.61.7383 ↗
47. Anomalous low-temperature and high-field magnetoresistance in the organic superconductor β″-(BEDT–TTF)2SF5CH2CF2SO310.1103/PhysRevB.60.6296 ↗
48. Superconducting properties of quasi-two-dimensional organic metals10.1016/S0921-4534(99)00049-0 ↗
49. Perspectives on the nature of superconductivity in organic metals10.1023/A:1022592522487 ↗
50. 2000 · vol 34 · 1
51. First order vortex phase transition in the organic superconductor κ-(BEDT–TTF)2Cu(NCS)210.1023/A:1022597801589 ↗
52. Evidence for a vortex-lattice melting transition in an organic superconductor10.1103/PhysRevB.56.R2936 ↗
53. Josephson plasma resonance in κ-(BEDT–TTF)2Cu(NCS)210.1103/PhysRevB.62.5965 ↗
54. Inhomogeneous interlayer Josephson coupling in κ-(BEDT–TTF)2Cu(NCS)210.1088/0953-8984/11/8/013 ↗
55. Direct observation of vortices in the organic superconductor κ-(BEDT–TTF)2Cu(NCS)210.1103/PhysRevB.61.14358 ↗
56. Anisotropy of the upper critical field in (TMTSF)2PF610.1103/PhysRevLett.78.3555 ↗
57. Revival of superconductivity in high magnetic fields and a possible p-wave pairing in (TMTSF)2PF610.1103/PhysRevB.59.R721 ↗
58. Lee IJ, Chow DS, Clark WG, Strouse J, Naughton MJ, Chaikin PM, Brown SE. Evidence from 77Se Knight shifts for triplet superconductivity in (TMTSF)2PF6. cond-mat/0001332. In a joint effort the challenging task to perform NMR measurements under pressure in a dilution refrigerator with carefully aligned magnetic fields was rewarded by high-quality Knight-shift results which support the existence of a triplet superconducting state in the 1D Bechgaard salts.
59. Triplet electron pairing and anisotropic spin susceptibility in organic superconductors (TMTSF)2X10.1103/PhysRevB.62.R795 ↗
60. Symmetry of the superconducting order parameter in Bechgaard salts10.1016/S0379-6779(98)00291-4 ↗
61. Possible spin-singlet superconductivity in (TMTSF)2PF6: superconducting transition temperature in a magnetic field10.1143/JPSJ.68.3794 ↗
62. Nodeless d-wave superconductivity in a quasi-one-dimensional organic superconductor under anion order10.1103/PhysRevB.61.R14936 ↗
63. Ishiguro T. Organic superconductors in the Pauli paramagnetic limit region. J Phys IV France 2000;10:Pr3-139–46.10.1051/jp4:2000314 ↗
64. Paramagnetic limiting of the upper critical field of the layered organic superconductor κ-(BEDT–TTF)2Cu(NCS)210.1103/PhysRevB.61.750 ↗
65. Specific heat of organic superconductor κ-(BEDT–TTF)2Cu[N(CN)2]Br10.1103/PhysRevB.62.103 ↗
66. Comparative thermal-expansion study of β′-(ET)2SF5CH2CF2SO3 and κ-(ET)2Cu(NCS)2: uniaxial pressure coefficients of Tc and upper critical fields10.1103/PhysRevB.61.11739 ↗
67. Heat conduction in κ-(BEDT–TTF)2X superconductors10.1016/S0379-6779(98)00399-3 ↗
68. Probing the order parameter of the layered organic superconductor κ-(BEDT–TTF)2Cu[N(CN)2]Br by ac susceptibility measurements10.1103/PhysRevB.61.7033 ↗
69. Low-temperature penetration depth of κ-(BEDT–TTF)2Cu[N(CN)2]Br and κ-(BEDT–TTF)2Cu(NCS)210.1103/PhysRevLett.83.4172 ↗
70. Millimeter-wave magneto-optical determination of the anisotropy of the superconducting order parameter in the molecular superconductor κ-(BEDT–TTF)2Cu(NCS)210.1103/PhysRevLett.83.3041 ↗
71. κ-(BEDT–TTF)2Cu[N(CN)2]Br: a fully gapped strong-coupling superconductor10.1103/PhysRevLett.84.6098 ↗