Unconventional electrodynamics of high-Tc and organic superconductors

Thomas Timusk; N. Cao; D. N. Basov; Christopher C. Homes

doi:10.1117/12.241745

10 June 1996 Unconventional electrodynamics of high-T_c and organic superconductors

Thomas Timusk, N. Cao, D. N. Basov, Christopher C. Homes

Proceedings Volume 2696, Spectroscopic Studies of Superconductors; (1996) https://doi.org/10.1117/12.241745
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

The combination of lowered dimensionality and electron-electron correlations are responsible for the unusual temperature and frequency dependence of the electrical conductivity of the new superconductors. We first review the electrodynamics of two systems, U₂Ru₂Si₂ and Sr₂RuO₄ where conventional Fermi liquid ideas seem to work. Here transport is by free carriers with strongly renormalized masses. On the other hand the electrodynamics of the high T_c cuprates and the organic charge transfer salts is unconventional. The high T_cs show a Drude peak with an anomalous temperature and frequency dependent scattering rate for the in-plane conductivity, while normal to the planes they are almost insulating. In the organics, the transport currents are carried by a narrow collective mode coupled to phonons.

Citation Download Citation

Thomas Timusk, N. Cao, D. N. Basov, and Christopher C. Homes "Unconventional electrodynamics of high-T_c and organic superconductors", Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); https://doi.org/10.1117/12.241745

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