Study of the far-infrared and mm-wave conductivity of YBCO in the normal state
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An accurate determination of the optical conductivity σ(ν) of high-T c materials at low frequencies (ν<100 cm−1) is still an open problem. In the present paper we report new far-infrared data showing that the LaAlO3 crystal, on which high-quality YBCO films can be deposited, is well transparent at low frequencies. Test measurements have also been performed by employing the ENEA compact FEL facility; preliminary reslts indicate the possibility to obtain high-accuracy spectroscopic data in the mm-wave region. On the basis of these results, we have in program mm-wave and far-infrared transmittance measurements on thin YBCO films on LaAlO3, in order to get new information on the low-frequency behaviour of σ(ν).
PACS74.30.Gn Response to electromagnetic fields nuclear magnetic resonance ultrasonic attenuation
PACS01.30.Cc Conference proceedings
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- T. Timusk and D. B. Tanner: in Physical Properties of High-Temperature Superconductors, edited by D. M. Ginsberg (World Scientific, Singapore, 1989), p. 339.Google Scholar
- D. B. Tanner and T. Timusk: in Physical Properties of High-Temperature Superconductors III, edited by D. M. Ginsberg (World Scientific, Singapore, 1992), p. 363.Google Scholar
- P. Dore, R. Trippetti, C. P. Varsamis, A. Sherman, V. Boffa and D. Livanov: in M 2S-HTSC IV, Grenoble (France), 5–9 July 1994, Physica C, 235–240 1103 (1994).Google Scholar