Home
For authors
Submission status

Current
Archive
Archive (English)
   Volumes 21-40
   Volumes 1-20
   Volumes 41-62
      Volume 62
      Volume 61
      Volume 60
      Volume 59
      Volume 58
      Volume 57
      Volume 56
      Volume 55
      Volume 54
      Volume 53
      Volume 52
      Volume 51
      Volume 50
      Volume 49
      Volume 48
      Volume 47
      Volume 46
      Volume 45
      Volume 44
      Volume 43
      Volume 42
      Volume 41
Search
VOLUME 61 (1995) | ISSUE 10 | PAGE 814
Possible fluctuation origin of the anomalies in the c-axis magnetoresistance observed in Bi2Sr2CaCu2O8+x above the critical temperature
An expression for the transverse magnetoresistance above Tc has been derived from the theory of fluctuation contribution to the c-axis conductivity of layered superconductors under an external magnetic field,, which was recently developed by Dorin et al. The suppression of fluctuations due to the magnetic field leads to a decrease of the negative fluctuation contribution to the conductance, and therefore to a negative transverse magnetoresistance at temperatures not too close to Tc. The formula derived from the theory has been compared with the available experimental data of the magnetoresistance of BSCCO single crystals obtained by Ong et al. at temperatures 10-20 К above Tc. The quadratic increase of the relative magnetoresistance with the field and its temperature dependence are explained clearly. A quantitative fit to the experimental data shows a remarkable agreement of the theory with experiment, and allows to extract the values of several physical parameters. © 1995 American Institute of Physics.