Navegar

Colección

Datos Estadísticas

Artículo

La versión final de este artículo es de uso interno. El editor solo permite incluir en el repositorio el artículo en su versión post-print. Por favor, si usted la posee enviela a
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

We have studied the resistive transition into the superconducting state of single phase polycrystalline La1.8Sr0.2CuO4-δ samples, in a magnetic field range below 50 Oe. We find that at zero field and near the zero resistivity temperature the transition is well described as dissipation due to thermally induced phase fluctuations in neighbour superconducting grains. We find that the excess conductivity above the conductivity of the intergranular junctions displays critical behavior with unique critical exponent in four samples, independent of method of preparation, oxygen content and applied magnetic field; the obtained value, γ=2.0±0.1 differs from previously reported values for polycrystalline YBa2Cu3O7-y. In this description, increasing magnetic fields, enhance the granular behaviour of polycrystalline La1.8Sr0.2CuO4-δ as compared with previous results on samples with induced granularity. © 1991.

Registro:

Documento: Artículo
Título:Paracoherence in polycrystalline La1.8Sr0.2CuO4-δ
Autor:Levy, P.; Acha, C.; Bekeris, V.
Filiación:División Física del Sólido, Departamento de Física, Comisión Nacional de Energia Atómica, Libertador 8250 (1429) Cap.Fed, Argentina
Laboratorio de Bajas Temperaturas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Buenos Aires, Pab.I (1428) Cap.Fed, Ciudad Universitaria, Argentina
Año:1991
Volumen:80
Número:10
Página de inicio:849
Página de fin:853
DOI: http://dx.doi.org/10.1016/0038-1098(91)90519-2
Título revista:Solid State Communications
Título revista abreviado:Solid State Commun
ISSN:00381098
CODEN:SSCOA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00381098_v80_n10_p849_Levy

Referencias:

  • Bednorz, Muller, (1986) Z. Phys., 64 B, p. 189
  • Tinkham, Lobb, (1989) Solid State Physics, 42, p. 91
  • Clem, Granular and superconducting-glass properties of the high-temperature superconductors (1988) Physica C: Superconductivity, 153-155, p. 50
  • Lebeau, Rosenblatt, Raboutou, Peyral, (1986) Europhys. Lett., 1 (6), p. 313
  • J. Rosenblatt, A.Raboutou and P.Pellan in Low Temperature Physics LT14, Eds. M.Krusius and M.Vuorio (American Elsevier, New York), Vol 2, p. 361; de la Cruz, Civale, Safar, (1990) Proceedings of the Conference on Oxygen Effects in High Tc Superconductors, , J.L. Moran Lopez, I. Schuller, Trieste 1989, Plenum, New York
  • de la Cruz, (1990) Proceedings of the I.C.T.P.S., , Rio de Janiero, Brazil
  • Civale, (1989) Ph.D. thesis, , Universidad Nacional de Cuyo, Argentina
  • Rosenblatt, Raboutou, Peyral, Lebeau, Intragranular and intergranular transitions in Y-Ba-Cu-O ceramics (1990) Revue de Physique Appliquée, 25, p. 73
  • Polla, Acha, Duran, Baggio, de Benyacar, (1990) Solid State Commun., 74, p. 487
  • Polla, Acha, Leyva, de Benyacar, (1990) Solid State Commun., 76, p. 1253
  • J. Rosenblatt, A.Raboutou and P.Pellan in Low Temperature Physics LT14, Eds. M.Krusius and M.Vuorio (American Elsevier, New York), Vol 2, p. 361; Rosenblatt, Raboutou, Lebeau, Peyral, (1988) Proceedings of the Latin American Conference on High Tc Superconductors, p. 225. , R. Nicolsky, R. Barrio, O.F. de Lima, R. Escudero, World Scientific, Singapore

Citas:

---------- APA ----------
Levy, P., Acha, C. & Bekeris, V. (1991) . Paracoherence in polycrystalline La1.8Sr0.2CuO4-δ. Solid State Communications, 80(10), 849-853.
http://dx.doi.org/10.1016/0038-1098(91)90519-2
---------- CHICAGO ----------
Levy, P., Acha, C., Bekeris, V. "Paracoherence in polycrystalline La1.8Sr0.2CuO4-δ" . Solid State Communications 80, no. 10 (1991) : 849-853.
http://dx.doi.org/10.1016/0038-1098(91)90519-2
---------- MLA ----------
Levy, P., Acha, C., Bekeris, V. "Paracoherence in polycrystalline La1.8Sr0.2CuO4-δ" . Solid State Communications, vol. 80, no. 10, 1991, pp. 849-853.
http://dx.doi.org/10.1016/0038-1098(91)90519-2
---------- VANCOUVER ----------
Levy, P., Acha, C., Bekeris, V. Paracoherence in polycrystalline La1.8Sr0.2CuO4-δ. Solid State Commun. 1991;80(10):849-853.
http://dx.doi.org/10.1016/0038-1098(91)90519-2