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Normal-State Infrared Anisotropy of Polycrystalline La1.85Sr0.15CuO4-y

  • G. L. Doll (a1), J. Steinbeck (a1), M. S. Dresselhaus (a1), G. Dresselhaus (a2), A. J. Strauss (a3), H. J. Zeiger (a3), G. Phillips (a4) and J. Waldman (a4)...


By examining the reflectance spectra of polycrystalline La1.85Sr0.15CuO4-y and La2NiO4-y in relation to the results of ir studies on single-crystal La2NiO4-y, we have determined the normal-state (room temperature) optical anisotropy of La1.85Sr0.15CuO4-y in the frequency range 40 cm-1 to 4800 cm-1. Vibrational and electronic properties corresponding to this anisotropy are examined, and a method is presented for extracting the optical properties of the superconducting state of La1.85Sr0.15CuO4-y.



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1. Doll, G.L., Steinbeck, J., Dresselhaus, G., Dresselhaus, M.S., Strauss, A.J. and Zeiger, H.J., Phys. Rev. B (in press).
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11. Eklund, P.C., private communication.


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