N Bhattacharya et al 2009 Supercond. Sci. Technol. 22 125013 doi:10.1088/0953-2048/22/12/125013
Investigation of carriers and ac transport processes in pure and praseodymium doped YBCO in normal states
N Bhattacharya1, A Chakrabarti1, B K Mandal2 and C Neogy1,3
Show affiliationsThe ratio of the real (σ1) and imaginary (σ2) parts of the ac conductivity of Y(1−x)PrxBa2Cu3O7−δ (x = 0,0.1,0.3,0.4) in the frequency range 0.5–12 MHz and in the temperature range 78–300 K is measured. The agreement between the experimental and theoretical results suggests that the normal state ac conduction behaviour can be successfully explained using a correlated barrier hopping (CBH) model for polarons as carriers. The CBH process is dominant in the higher frequency range (above 2.5 MHz), and at lower frequencies tunnelling of polarons has to be considered to explain the nature of the variation of 
with ω. This analysis may be considered as supporting evidence for Mott's theory of polaronic conduction in high temperature superconducting materials.
- PACS
-
74.25.Fy Transport properties (electric and thermal conductivity, thermoelectric effects, etc.)
- Subjects
- Dates
-
Issue 12 (December 2009)
Received 10 August 2009
Published 23 October 2009
-
Investigation of carriers and ac transport processes in pure and praseodymium doped YBCO in normal states
N Bhattacharya et al 2009 Supercond. Sci. Technol. 22 125013
-
A determinantal formula for the GOE Tracy–Widom distribution
Patrik L Ferrari and Herbert Spohn 2005 J. Phys. A: Math. Gen. 38 L557
-
Collective and tracer diffusion kinetics in the ternary random alloy
I V Belova et al 2002 J. Phys.: Condens. Matter 14 6897
-
Magnetic resonance spectroscopy (MRS) in the investigation of cancer at The Royal Marsden Hospital and The Institute of Cancer Research
M O Leach 2006 Phys. Med. Biol. 51 R61
-
Resonant two-photon ionization of atoms via two coupled Rydberg series
N J Kylstra et al 1995 J. Phys. B: At. Mol. Opt. Phys. 28 L685
-
The formation of vertically aligned biaxial tungsten nanorods using a novel shadowing growth technique
R Krishnan et al 2009 Nanotechnology 20 465609
-
Structure of Nonlocal Vacuum Condensate of Quarks
Zhou Li-Juan and Ma Wei-Xing 2003 Chinese Phys. Lett. 20 2137
-
Evolution of the Inner Circumstellar Envelope of V838 Monocerotis
J. P. Wisniewski et al 2003 ApJ 598 L43
-
Quiet-Sun Connection between Intensity, Doppler Shift, and Line Broadening in Solar Ultraviolet Emission Lines
N. Brynildsen et al 1995 ApJ 455 L81
-
Mode generation and diffraction at the aperture of a waveguide
Ian Thompson et al 2005 J. Phys. A: Math. Gen. 38 2701
Users also read
What's this?- Possible high temperature superconductivity in a Ti-doped A–Sc–Fe–As–O (A = Ca, Sr) system
- Dynamic magneto-optical imaging of transport current redistribution and normal zone propagation in YBa2Cu3O7−δ coated conductor
- The effect of citric and oxalic acid doping on the superconducting properties of MgB2
Related review articles
What's this?- Unified scaling law for flux pinning in practical superconductors: I. Separability postulate, raw scaling data and parameterization at moderate strains*
- An overview on iron based superconductors
- Probing multiband superconductivity by point-contact spectroscopy