Transport Properties of D -Wave Superconductors with Impurities
1995; Institute of Physics; Volume: 32; Issue: 4 Linguagem: Inglês
10.1209/0295-5075/32/4/012
ISSN1286-4854
Autores Tópico(s)Superconductivity in MgB2 and Alloys
ResumoWe extend our earlier analysis to the electronic thermal conductivity κ and the frequency-dependent electric conductivity σ(ω) at low temperatures where quasi-particle scattering is dominated by impurities. Both κ and σ1(0) at low temperatures increase with impurity concentration, implying that the pair breaking dominates the quasi-particle scattering. Further, σ1(ω) at T = 0 K is found to have a surprising non-Drudian sharp peak at ω = 0. The inclusion of this sharp structure appears to be indispensable for a proper analysis of the surface impedance data of Zn-doped high-Tc cuprates.
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