Advertisement

Journal of Experimental and Theoretical Physics

, Volume 86, Issue 2, pp 395–404 | Cite as

Electronic structure and superconductivity of κ-(BEDT-TTF)2X salts

  • V. A. Ivanov
  • E. A. Ugolkova
  • M. E. Zhuravlev
Solids

Abstract

We have analyzed the electronic structure and superconducting properties of layered crystals based on BEDT-TTF salts (hereafter denoted as ET), in which intramolecular interaction among electrons is important. For the case of realistic κ-packing of ET-molecules in a plane of ET2 dimers we have calculated the electron density of states. Using the calculated electronic structure, we have analyzed the symmetry of the anisotropic superconducting pairing. The critical value of the effective attraction between electrons for formation of a bound pair in an empty lattice has been estimated. The relation between the nodes of the d-type order parameter on the anisotropic Fermi surface and superconducting properties of the condensate is discussed in the Bardeen-Cooper-Schrieffer (BCS) model. The results are in agreement with the known band parameters of the normal phase and measurements of the magnetic field penetration depth, heat capacity as a function of temperature in the low-temperature range, and NMR in κ-ET2X superconducting salts.

Keywords

Heat Capacity Penetration Depth Fermi Surface Normal Phase Intramolecular Interaction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    H. Akamatsu and H. Inokuchi, J. Chem. Phys. 18, 810 (1950); H. Akamatsu, H. Inokuchi, and Y. Matsunaga, Nature 173, 168 (1954).Google Scholar
  2. 2.
    D. Jerome, A. Mazaud, M. Ribault, and K. Bechgaard, J. Phys. Lett. 41, L95 (1980); K. Bechgaard, C. S. Jacobsen, K. Mortensen et al., Solid State Commun. 33, 1119 (1980).Google Scholar
  3. 3.
    É. B. Yagubskii, I. F. Shchegolev, V. N. Laukhin et al., JETP Lett. 39, 12 (1984); V. F. Kaminskii, T. G Prokhorova, R. P. Shibaeva et al., JETP Lett. 39, 17 (1984).ADSGoogle Scholar
  4. 4.
    H. Urayama, H. Yamochi, G. Saito et al., Chem. Lett. 1, 55 (1988).Google Scholar
  5. 5.
    M. V. Kartsovnik, V. N. Laukhin, V. I. Nizhankovskii, and A. A. Ignat’ev, JETP Lett. 47, 363 (1988); M. V. Kartsovnik, P. A. Kononovich, V. N. Laukhin, I. F. Shchegolev, JETP Lett. 48, 541 (1988).ADSGoogle Scholar
  6. 6.
    K. Murata, N. Toyota, Y. Honda et al., J. Phys. Soc. Jpn. 57, 1540 (1988).CrossRefGoogle Scholar
  7. 7.
    D. Jerome, in Organic Conductors, ed. by J.-P. Farges, Marcel Dekker (1994), Ch. 10, p. 405.Google Scholar
  8. 8.
    K. Kanoda, Kotai Buzuri, Solid State Phys. (Tokyo) [in Japanese] 30, 240 (1995).Google Scholar
  9. 9.
    T. Ishiguro and K. Yamaji, Organic Superconductors, Solid State Science Vol. 88, Springer-Verlag, Tokyo (1990).Google Scholar
  10. 10.
    R. B. Lyubovskii, S. I. Pesotskii, A. Gilevskii, and R. N. Lyubovskaya, Zh. Éksp. Teor. Fiz. 107, 1698 (1995) [JETP 80, 946 (1995)].Google Scholar
  11. 11.
    L. N. Bulaevskii, Adv. Phys. 37, 443 (1988).CrossRefADSGoogle Scholar
  12. 12.
    N. Toyota, E. W. Fenton, T. Sasaki, and M. Tachiki, Solid State Commun. 72, 859 (1989).CrossRefGoogle Scholar
  13. 13.
    H. Kino and H. Fukuyama, J. Phys. Soc. Jpn. 65, 2158 (1996).CrossRefGoogle Scholar
  14. 14.
    V. Ivanov and K. Kanoda, Physica C 268, 205 (1996); Mol. Cryst. Liq. Cryst. 285, 211 (1996).CrossRefADSGoogle Scholar
  15. 15.
    V. A. Ivanov, Physica C 271, 127 (1996).CrossRefADSGoogle Scholar
  16. 16.
    V. Ivanov, K. Yakushi, and E. Ugolkova, Physica C 275, 26 (1997).CrossRefADSGoogle Scholar
  17. 17.
    E. Z. Kuchinskii, M. V. Sadovskii, M. A. Érkabaev, Zh. Éksp. Teor. Fiz. 104, 3550 (1993) [JETP 77, 692 (1993)].Google Scholar
  18. 18.
    R. Fehrenbacher and M. R. Norman, Phys. Rev. B 50, 3495 (1994).CrossRefADSGoogle Scholar
  19. 19.
    A. A. Abrikosov, Physica C 214, 103 (1993).ADSGoogle Scholar
  20. 20.
    L. A. Openov, V. F. Elesin, and A. V. Krasheninnikov, Physica C 275, 53 (1996).ADSGoogle Scholar
  21. 21.
    A. I. Posazhennikova and M. V. Sadovskii, JETP Lett. 63, 358 (1996).CrossRefADSGoogle Scholar
  22. 22.
    K. Oshima, T. Mori, H. Inokuchi et al., Phys. Rev. B 38, 938 (1988).CrossRefADSGoogle Scholar
  23. 23.
    Y. Hasegawa, P. Lederer, T. M. Rice et al., Phys. Rev. Lett. 63, 907 (1989).CrossRefADSGoogle Scholar
  24. 24.
    V. A. Moskalenko, M. E. Palistrant, and V. M. Vakalyuk, Usp. Fiz. Nauk 161, 155 (1991) [Sov. Phys. Usp. 34, 265 (1991)].Google Scholar
  25. 25.
    A. A. Gorbatsevich and Yu. V. Kopaev, JETP Lett. 51, 373 (1990).ADSGoogle Scholar
  26. 26.
    K. Miyakc, Prog. Theor. Phys. 69, 1794 (1983).ADSGoogle Scholar
  27. 27.
    M. Randeria, J.-M. Duan, and L.-Y. Shieh, Phys. Rev. Lett. 62, 981 (1989).ADSGoogle Scholar
  28. 28.
    V. A. Ivanov, P. E. Kornilovich, and V. V. Bobryshev, Physica C 235–240, 2369 (1994).Google Scholar
  29. 29.
    M. Yu. Kagan and T. M. Rice, J. Phys.: Condens. Matter 6, 3771 (1994).CrossRefADSGoogle Scholar
  30. 30.
    R. Micnas, J. Ranninger, and S. Robaszkiewicz, J. Phys. C 21, L145 (1988).CrossRefADSGoogle Scholar
  31. 31.
    F. J. Ohkawa and H. Fukuyama, J. Phys. Soc. Jpn. 53, 4344 (1984).Google Scholar
  32. 32.
    C. Lacroix, C. Bastide, and A. da Rosa Simoes, Physica B 163, 124 (1990).CrossRefADSGoogle Scholar
  33. 33.
    Superconductivity, ed. by R. D. Parks, Plenum Press, New York-London (1981).Google Scholar
  34. 34.
    M. Frick and T. Schneider, Z. Phys. B 78, 159 (1990).CrossRefGoogle Scholar
  35. 35.
    M. Dressel, O. Klein, G. Grüner et al., Phys. Rev. B 50, 13603 (1994).Google Scholar
  36. 36.
    M. Lang, N. Toyota, T. Sasaki, and H. Sato, Phys. Rev. Lett. 69, 1443 (1992).ADSGoogle Scholar
  37. 37.
    Y. Nakazawa and K. Kanoda, Phys. Rev. B 55, 8670 (1997); Physica C 282–287, 1897 (1997).CrossRefADSGoogle Scholar
  38. 38.
    B. T. Geilikman, Usp. Fiz. Nauk 88, 327 (1966).Google Scholar
  39. 39.
    G. E. Volovik and L. P. Gor’kov, Zh. Éksp. Teor. Fiz. 88, 1412 (1985) [Sov. Phys. JETP 61, 843 (1985)].ADSGoogle Scholar
  40. 40.
    Y. Hasegawa, J. Phys. Soc. Jpn. 65, 3131 (1996).Google Scholar
  41. 41.
    B. Andraka, G. R. Stewart, K. D. Carbon et al., Phys. Rev. B 42, 9963 (1990).ADSGoogle Scholar
  42. 42.
    Y. Nakazawa, A. Kawamoto, and K. Kanoda, Phys. Rev. B 52, 12890 (1995).Google Scholar
  43. 43.
    T. Ichinomiya and K. Yamada, J. Phys. Soc. Jpn. 65, 1764 (1996).CrossRefGoogle Scholar
  44. 44.
    S. M. de Soto, C. P. Slichter, A. M. Kini et al., Phys. Rev. B 52, 10364 (1995).Google Scholar
  45. 45.
    H. Mayaffre, P. Wzietek, D. Jerome et al., Phys. Rev. Lett. 75, 4122 (1995).ADSGoogle Scholar
  46. 46.
    K. Kanoda, K. Miyagawa, A. Kawamoto, and Y. Nakazawa, Phys. Rev. B 54, 76 (1996).CrossRefADSGoogle Scholar
  47. 47.
    Yu. V. Kopaev and L. R. Tagirov, JETP Lett. 49, 499 (1989).ADSGoogle Scholar
  48. 48.
    K. A. Moler, D. J. Baar, J. C. Urbach et al., Phys. Rev. Lett. 73, 2744 (1994).CrossRefADSGoogle Scholar
  49. 49.
    T. Imai, T. Shimizu, H. Yasuoka et al., J. Phys. Soc. Jpn. 57, 2280 (1988).Google Scholar
  50. 50.
    Y. Kitaoka, S. Hiramatsu, Y. Konori et al., Physica C 153, 83 (1988).CrossRefADSGoogle Scholar
  51. 51.
    N. Bulut and D. J. Scalapino, Phys. Rev. Lett. 67, 2898 (1991).CrossRefADSGoogle Scholar
  52. 52.
    J. P. Lu, Modern Phys. Lett. B 6, 547 (1992).ADSGoogle Scholar
  53. 53.
    J. Caulfield, W. Lubczynski, F. L. Pratt et al., J. Phys.: Condens. Matter 6, 2911 (1994).CrossRefADSGoogle Scholar
  54. 54.
    F. L. Pratt, J. Singleton, M. Kurmoto et al., in The Physics and Chemistry of Organic Superconductors, ed. by G. Saito and S. Kagoshima, Springer-Verlag, Berlin-Heidelberg (1990), p. 200.Google Scholar
  55. 55.
    A. Ugawa, G. Ojima, K. Yakushi, and H. Kuroda, Phys. Rev. B 38, 5122 (1988).CrossRefADSGoogle Scholar
  56. 56.
    M. V. Kartsovnik, G. Yu. Logvenov, H. Ito et al., Phys. Rev. B 52, 15715 (1995).Google Scholar
  57. 57.
    T. Sasaki, H. Sato, and N. Toyota, Physica C 185–189, 2687 (1991).Google Scholar
  58. 58.
    C.-P. Heidman, H. Müller, K. Biberacher et al., Synth. Met. 41–43, 2029 (1991).Google Scholar
  59. 59.
    J. Wosnitza, G. W. Crabtree, H. H. Wang, et al., Phys. Rev. B 45, 3018 (1992).CrossRefADSGoogle Scholar
  60. 60.
    J. Caulfield, J. Singleton, F. L. Pratt et al., Synth. Met. 61, 63 (1993).Google Scholar
  61. 61.
    T. Komatsu, N. Matsukawa, T. Inoue, and G. Saito, J. Phys. Soc. Jpn. 65, 1340 (1993).Google Scholar

Copyright information

© American Institute of Physics 1998

Authors and Affiliations

  • V. A. Ivanov
    • 1
  • E. A. Ugolkova
    • 1
  • M. E. Zhuravlev
    • 1
  1. 1.N. S. Kurnakov Institute of General and Inorganic ChemistryRussian Academy of SciencesMoscowRussia

Personalised recommendations