Actas de congresos
Lowest Landau Level Diamagnetic Fluctuations In Niobium
Registro en:
Physica C: Superconductivity And Its Applications. , v. 408-410, n. 1-4, p. 664 - 665, 2004.
9214534
10.1016/j.physc.2004.06.010
2-s2.0-4344610054
Autor
Salem-Sugui Jr. S.
Friesen M.
Alvarenga A.D.
Schilling O.F.
Gandra F.G.
Doria M.M.
Institución
Resumen
We have performed a magnetic study of a bulk metallic sample of Nb with critical temerature Tc=8.5 K. Magnetization measurement taken for magnetic fields greater than 1 kOe show a superconducting transition that becomes broader as the field is increased. The data are well described by lowest Landau level (LLL) fluctuation theory. A scaling analysis yields values for the supercondunting transition temperature under field Tc(H) which are consistent with Hc2(T). © 2004 Published by Elsevier B.V. 408-410 1-4 664 665 Bergmann, G., (1969) Z. Phys., 225, p. 430 Lee, P.A., Shenoy, S.R., (1972) Phys. Rev. Lett., 28, p. 1025 Ullah, S., Dorsey, A.T., (1990) Phys. Rev. Lett., 65, p. 2066 (1991) Phys. Rev. B, 44, p. 262 Welp, U., (1991) Phys. Rev. Lett., 67, p. 3180 Suenaga, M., (1991) Phys. Rev. Lett., 66, p. 1777 Tinkham, M., (1996) Introduction to Superconductivity, Second Ed., , McGraw-Hill, New York Farrant, S.P., Gough, C.E., (1975) Phys. Rev. Lett., 34, p. 943 Salem-Sugui Jr., S., Da Silva, E.Z., (1994) Phisica C, 235, p. 1919 Salem-Sugui Jr., S., (2002) Phys. Rev. B, 66. , art. 134521