Infrared anisotropy and plasmons in high-temperature superconductors

Jae Hoon Kim, B. J. Feenstra, H. S. Somal, D. van der Marel, A. Wittlin, V. H M Duijn, A. A. Menovsky, Wen Y. Lee

Research output: Contribution to journalArticle

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Abstract

We show that from measurements of reflectivity of a uniaxial medium taken at a finite incidence angle with s- and p-polarized light it is possible to determine the dielectric function both parallel and perpendicular to the optical axis. When applied to a layered compound with its surface parallel to the layers, this technique allows for an accurate determination of the loss function perpendicular to the layers. This is demonstrated for the case of c-axis-oriented films of the high-temperature superconductor Tl2Ba2Ca2Cu3O10, on which we carried out polarized reflectivity measurements at 45° incidence angle above and below Tc. We also studied the infrared response of La1.85Sr0.15CuO4 single crystals with the light polarized parallel and perpendicular to the c-axis as a function of temperature. We confirm the results reported by Tamasaku [Phys. Rev. Lett. 69 (1992) 1455]: in the superconducting state a plasma branch occurs below the gap.

Original languageEnglish
Pages (from-to)1577-1578
Number of pages2
JournalSynthetic Metals
Volume71
Issue number1-3
DOIs
Publication statusPublished - 1995 Apr 1

Fingerprint

Plasmons
High temperature superconductors
Light polarization
plasmons
high temperature superconductors
Anisotropy
Infrared radiation
polarized light
anisotropy
incidence
reflectance
Sand
Single crystals
Plasmas
sands
single crystals
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Kim, J. H., Feenstra, B. J., Somal, H. S., van der Marel, D., Wittlin, A., Duijn, V. H. M., ... Lee, W. Y. (1995). Infrared anisotropy and plasmons in high-temperature superconductors. Synthetic Metals, 71(1-3), 1577-1578. https://doi.org/10.1016/0379-6779(94)02957-Z
Kim, Jae Hoon ; Feenstra, B. J. ; Somal, H. S. ; van der Marel, D. ; Wittlin, A. ; Duijn, V. H M ; Menovsky, A. A. ; Lee, Wen Y. / Infrared anisotropy and plasmons in high-temperature superconductors. In: Synthetic Metals. 1995 ; Vol. 71, No. 1-3. pp. 1577-1578.
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Kim, JH, Feenstra, BJ, Somal, HS, van der Marel, D, Wittlin, A, Duijn, VHM, Menovsky, AA & Lee, WY 1995, 'Infrared anisotropy and plasmons in high-temperature superconductors', Synthetic Metals, vol. 71, no. 1-3, pp. 1577-1578. https://doi.org/10.1016/0379-6779(94)02957-Z

Infrared anisotropy and plasmons in high-temperature superconductors. / Kim, Jae Hoon; Feenstra, B. J.; Somal, H. S.; van der Marel, D.; Wittlin, A.; Duijn, V. H M; Menovsky, A. A.; Lee, Wen Y.

In: Synthetic Metals, Vol. 71, No. 1-3, 01.04.1995, p. 1577-1578.

Research output: Contribution to journalArticle

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AU - Lee, Wen Y.

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Kim JH, Feenstra BJ, Somal HS, van der Marel D, Wittlin A, Duijn VHM et al. Infrared anisotropy and plasmons in high-temperature superconductors. Synthetic Metals. 1995 Apr 1;71(1-3):1577-1578. https://doi.org/10.1016/0379-6779(94)02957-Z