139 research outputs found
Optical conductivity of d-wave superconductors
We study theoretically the optical conductivity of d-wave superconductors
like in high temperature cuprates in the presence of impurities. We limit
ourselves at T=0K and focus on the frequency dependence of both sigma_1(omega)
and \omega*\sigma_2(omega) for omega<2Delta. When the impurity scattering is in
the unitary limit, we find a peak in sigma_1(omega) with omega/Delta\simeq
0.1\sim 0.5$, which may account for the peak seen by Basov et al. in
Zn-substituted YBCO.Comment: 7 pages, 9 figures, submitted to Europhys. Let
ESP for Junior Year Medical Students as Part of Medical Curriculum
Article信州大学教育システム研究開発センター紀要 9: 79-86(2003)departmental bulletin pape
Magnetotransport in d-wave density waves
Angle dependent magnetoresistance (ADMR) and giant Nernst effect are
hallmarks of unconventional density waves (UDW). Here these transport
properties for d-wave density wave (d-DW) are computed for
quasi-two-dimensional systems. The present theory describes ADMR observed in
the pseudogap phase of Y_0.68Pr_0.32Ba_2Cu_3O_7 and CeCoIn_5 single crystals
very satisfactorily.Comment: 7 pages, 6 figure
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