Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-06T12:16:30.726Z Has data issue: false hasContentIssue false
  • English
  • Français

Superconductivity at High Temperatures Without Copper: Ba1-xKxBiO3

Published online by Cambridge University Press:  29 November 2013

R.J. Cava  and
B. Batlogg
Get access

Extract

Before the pioneering work of Bednorz and Müller in finding superconductivity near 30 K in lanthanum-barium-copper oxide,. oxide superconductors were well known, but perhaps not fully appreciated. Most anomalous among those superconductors was the perovskite structure material BaPb0.75Bi0.25O3, with a superconducting transition temperature (Tc) of 12 K2 and a surprisingly low density of states at the Fermi level. The increases in Tc for copper-oxide-based materials continue to generate worldwide excitement, but from both a chemical and theoretical point of view, high Tc superconductivity observed in a noncopper containing material is also of considerable interest.

Recently we found that the simple cubic perovskite compound Ba0.6K0.4BiO3 displays a superconducting transition temperature near 30K—a Tc considerably higher than that of conventional superconductors and surpassed only by copper containing compounds. This material is in stark contrast to the now well-known copper oxides for two reasons: (1) superconductivity occurs within the framework of a three dimensionally connected bismuth-oxygen array (and not a 2-d array as in the Cu-O based compounds) and: (2) there are no magnetic fluctuations present in the chemical system, either in the superconductor itself or in the nonsuperconducting end member compound, eliminating the possibility that the high Tc might be caused by magnetic interactions. The parent compound BaBiO3 is, however, of considerable interest due to the presence of a structurally frozen charge disproportionation of the bismuth atoms, considered by many to be the electronic equivalent of the antiferromagnetism observed in the nonsuperconducting cuprate host compounds.

The ideal undistorted perovskite ABO3 structure consists of a regular array of equally dimensioned BO6 octahedra sharing all corner oxygens with neighboring equivalent octahedra, with 180° B-O-B angles.

Type
High Tc Superconductors
Information
MRS Bulletin , Volume 14 , Issue 1 , January 1989 , pp. 49 - 52
Copyright
Copyright © Materials Research Society 1989

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Bednorz, J.G. and Müller, K.A., Z. Phys. B 64 (1986) p. 189.CrossRefGoogle Scholar
2.Sleight, A.W., Gillson, J.L., and Bierstedt, P.E., Solid State Commun. 17 (1975) p. 27.CrossRefGoogle Scholar
3.Batlogg, B., Physica B 126 (1984) p. 275.Google Scholar
4.Kitazawa, K., Uchida, S., and Tanaka, S., Physica B 135 (1985) p. 505.Google Scholar
5.Cava, R.J., Batlogg, B., Krajewski, J.J., Farrow, R., Rupp, L.W. Jr., White, A.E., Short, K., Peck, W.F., and Kometani, T., Nature 332 (1988) p. 814.CrossRefGoogle Scholar
6.Chaillout, C., Santoro, A., Remeika, J.P., Cooper, A.S., Espinosa, G.P., and Marezio, M., Solid State Commun. 65 (1988) p. 1363.CrossRefGoogle Scholar
7.Takagi, H., Naito, M., Uchida, S., Kitazawa, K., Tanaka, S., and Katsui, A., Solid State Commun. 55 (1985) p. 1019.CrossRefGoogle Scholar
8.Tajima, S., Uchida, S., Masaki, A., Takagi, H., Kitazawa, K., Tanaka, S., and Katsui, A., Phys. Rev. B 32 (1985) p. 6302.CrossRefGoogle Scholar
9.Tajima, S., Uchida, S., Masaki, A., Takagi, H., Kitazawa, K., Tanaka, S., and Sugai, S., Phys. Rev. B 35 (1987) p. 696.CrossRefGoogle Scholar
10.Thanh, Truong D., Koma, A., and Tanaka, S., Appl. Phys. 22 (1980) p. 205.CrossRefGoogle Scholar
11.Batlogg, B., Remeika, J.P., Dynes, R.C., Barz, H., Cooper, A.S., and Garno, J.P., in Superconductivity in d and f Band Metals, 1982, edited by Buckel, W. and Weber, W. (Kernforschungszentrum, Karlsruhe).Google Scholar
12.Mattheiss, L.F., Gyorgy, E.M., and Johnson, D.W. Jr., Phys. Rev. B 37 (1988) p. 3745.CrossRefGoogle Scholar
13.Hinks, D.G., Dabrowski, B., Jorgensen, J.D., Mitchell, A.W., Richards, D.R., Pei, Shiyou, and Shi, Donglu, Nature 333 (1988) p. 836.CrossRefGoogle Scholar
14.Wignacourt, J.P., Swinnea, J.S., Steinfink, H., and Goodenough, J.B., Appl. Phys. Lett. (submitted).Google Scholar
15.Schneemeyer, L.F., Thomas, J.K., Siegrist, T., Batlogg, B., Rupp, L.W., Opila, R.L., Cava, R.J., and Murphy, D.W., Nature 335 (1988) p. 421.CrossRefGoogle Scholar
16.Fleming, R.M., Marsh, P., Cava, R.J., and Krajewski, J.J., Phys. Rev. B 38 (1988) p. 7026.CrossRefGoogle Scholar
17.Mattheiss, L.F. and Hamman, D.R., Phys. Rev. Lett. 60 (1988) p. 2681.CrossRefGoogle Scholar
18.Batlogg, B., Cava, R.J., Rupp, L.W. Jr., Mujsce, A.M., Krajewski, J.J., Remeika, J.P., Peck, W.F. Jr., Cooper, A.S., and Espinosa, G.P., Phys. Rev. Lett. 61 (1988) p. 1670.CrossRefGoogle Scholar
19.Uemura, Y.J., Sternleib, B.J., Cox, D.E., Brewer, J.H., Kadano, R., Kempton, J.R., Kiefl, R.F., Kreitzman, S.R., Luke, G.M., Mulhern, P., Riseman, T., Williams, D.L., Kossler, W.J., Yu, X.H., Stronach, C.E., Subramanian, M.A., Gopalakrishnan, J., and Sleight, A.W., Nature 355 (1988) p. 151.CrossRefGoogle Scholar