Far Infrared Optical Properties Of High Tc Superconductors LnBa2Cu30X ( Ln = Y, Ho, Er, Sm, Gd, Dy, Eu, Pr )

S. Onari; T. Hiroaki; A. Ono; S. Hidaka; T. Arai

doi:10.1117/12.978434

18 November 1989 Far Infrared Optical Properties Of High Tc Superconductors LnBa₂Cu₃0_x ( Ln = Y, Ho, Er, Sm, Gd, Dy, Eu, Pr )

S. Onari, T. Hiroaki, A. Ono, S. Hidaka, T. Arai

Author Affiliations +

Proceedings Volume 1039, 13th Intl Conf on Infrared and Millimeter Waves; (1989) https://doi.org/10.1117/12.978434
Event: 13th International Conference on Infrared and Millimeter Waves, 1987, Honolulu, HI, United States

Abstract

Systematic measurements of the far infrared reflection spectra of high Tc superconductors LnBa2Cu30x for various Ln as shown in the title were performed. Infrared reflection spectra of tetragonal LnBa2Cu10, exhibit Reststrahlen vibration at 640, 590, 530, 355 and 250 cm-1, common to these materials, and the spectra of the orthorhombic LnBa2Cu30x exhibit the characteristics of free carriers except PrBa2Cupx with weak phonon structures at 617, 570, 317 and 285 cm-1. PrBa2Cu3Ox is not a superconductor, and it has no characteristic broad band due to free carriers for all x in the range of 6 to 7.

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S. Onari, T. Hiroaki, A. Ono, S. Hidaka, and T. Arai "Far Infrared Optical Properties Of High Tc Superconductors LnBa₂Cu₃0_x ( Ln = Y, Ho, Er, Sm, Gd, Dy, Eu, Pr )", Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); https://doi.org/10.1117/12.978434

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