Correlation between crystal structure and resistivity of high-temperature superconducting cuprates
Roeser, H.P. and Bohr, A. and Haslam, D.T. and Lopez, J.S. and Stepper, M. and Huber, F.M. and Nikoghosyan, A.S. (2011) Correlation between crystal structure and resistivity of high-temperature superconducting cuprates. Armenian Journal of Physics, Vol.4 (issue 2), pp. 109-133.
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The experimental resistivity of high temperature superconducting (HTSC) cuprates at about Tc has been determined by many authors. For large devices the in-CuO2-plane resistivity has a range of (~ 0.5 < ρ(exp) < ~15) • 10-6 Ωm. Above Tc all HTSC materials behave like a classical device and the resistance depends on cross section and length of the device. Assuming a superconducting unit volume and a mode structure, which are given by the doping pattern through-out the whole crystal, the experimental resistivity values have been plotted versus ~ LR/Nmode. It shows a strong linear correlation in the form ρ(exp) = m3 • (LR/Nmode) • (n4/n3) with a slope of m3 = (13.39 ± 0.79) • 103 Ω. LR is an effective resistivity length, Nmode is the number of CuO2 planes per unit cell, n3 is the number of Cu3+ -ions per chemical formula and n4 is the number of different shifted stacking sequences per unit cell. The value for m3 is very close to the fundamental resistance of a single-mode ballistic conductor Rsm = h/2e2 ≈12,906 Ω, which appears when size quantization plays a dominant role.
|Title:||Correlation between crystal structure and resistivity of high-temperature superconducting cuprates|
|Journal or Publication Title:||Armenian Journal of Physics|
|In Open Access:||Yes|
|In ISI Web of Science:||No|
|Page Range:||pp. 109-133|
|Keywords:||superconducting phase transition, superconducting current channels, resistivity of cuprates|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Raumfahrt|
|HGF - Program Themes:||R - no assignement|
|DLR - Research area:||Raumfahrt|
|DLR - Program:||R - no assignement|
|DLR - Research theme (Project):||R -- no assignement|
|Institutes and Institutions:||Space Operations and Astronaut Training|
|Deposited By:||Maria Schönermark|
|Deposited On:||03 Feb 2012 09:15|
|Last Modified:||20 Mar 2013 19:45|
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