S L Prischepa et al 1999 Supercond. Sci. Technol. 12 533 doi:10.1088/0953-2048/12/8/311
Crossover from thermally activated to steady flow in the vortex dynamics of Bi2Sr2CaCu2O8+x thin films
S L Prischepa
,
, A Vecchione, V N Kushnir, M Salvato, A Yu Petrov, C Attanasio and L Maritato
We have measured the resistive transition of molecular beam epitaxy prepared Bi2Sr2CaCu2O8+x thin films in the presence of perpendicular low magnetic fields H (0 Oe<H<1100 Oe) for different values of the bias current density J (102 A cm-2<J<105 A cm-2). The experimental data show two distinct dissipative behaviours. In the low-current region (J<103 A cm-2) the electrical resistivity 
is independent on J, changing only with H, while in the high-current region (J>104 A cm-2) is independent of both the bias current and the magnetic field. The result is considered in terms of thermally activated flux flow-flux creep-steady flux flow crossovers. The role of the statistical distribution of the pinning energy in the vortex dynamics is discussed.
- PACS
-
81.15.Hi Molecular, atomic, ion, and chemical beam epitaxy
68.55.A- Nucleation and growth
74.25.Fy Transport properties (electric and thermal conductivity, thermoelectric effects, etc.)
- Subjects
- Dates
-
Issue 8 (August 1999)
Received 8 March 1999
-
Crossover from thermally activated to steady flow in the vortex dynamics of Bi2Sr2CaCu2O8+x thin films
S L Prischepa et al 1999 Supercond. Sci. Technol. 12 533
-
Production of antihydrogen at reduced magnetic field for anti-atom trapping
G B Andresen et al 2008 J. Phys. B: At. Mol. Opt. Phys. 41 011001
-
First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Galactic Signal Contamination from Sidelobe Pickup
C. Barnes et al. 2003 ApJS 148 51
-
Physics in a social context
Peter Campbell 2006 Phys. Educ. 41 514
-
The Turin Shroud
Jonathan Allday 2005 Phys. Educ. 40 67
-
Simulation of compound semiconductor devices using a scattering matrix approach
M A Alam and M S Lundstrom 1994 Semicond. Sci. Technol. 9 862
-
Active vibration suppression of a composite I-beam using fuzzy positive position control
H Gu and G Song 2005 Smart Mater. Struct. 14 540
-
Measurement of
wavelengths in helium-like sulphur
D J H Howie et al 1996 J. Phys. B: At. Mol. Opt. Phys. 29 927
-
Many-pole model of inelastic losses applied to calculations of XANES
J J Kas et al 2009 J. Phys.: Conf. Ser. 190 012009
-
Carbon fibers as a novel material for high-performance microelectromechanical systems (MEMS)
Shahyaan Desai et al 2006 J. Micromech. Microeng. 16 1403
Related review articles
What's this?- MgB2 thin films
- Scattering matrix approach to the description of quantum electron transport
- Films of iron chalcogenide superconductors