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Raman Measurements of Epitaxial YBa2Cu3O7–δ Films

  • G. Burns (a1), F. H. Dacol (a1), C. A. Feild (a1), A. Gupta (a1), F. Holtzberg (a1), G. Koren (a1), R. Laibowitz (a1), T. R. McGuire (a1), A. P. Segmuller (a1) and T. K. Worthington (a1)...

Abstract

We have measured the infrared (IR) reflectance and Raman spectra of electron doped and undoped Nd2CuO4 and Pr2CuO4. Utilizing the results from doped ceramics and undoped ab plane oriented single crystals, we observe and assign all the IR active phonons (3A2u + 4Eu) predicted by group theory. We have also observed the Raman active modes involving atom motion along the c axis. We compare our results to those found in the related hole superconductors based upon La2CuO4.

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1 Koren, G., Gupta, A., Giess, E.A., Segmuller, A., and Laibowitz, R.B., Appl. Phys. Lett. 54, 1054 (1989).
2 Laibowitz, R. B., MRS Bulletin 14, 58 (1989).
3 Burns, G., Dacol, F., Freitas, P., Plaskett, T. and König, W., Solid State Commun. 64, 471 (1987).
4 Burns, G., Dacol, F. H., Holtzberg, F. and Kaiser, D., Solid State Commun. 66, 217 (1988).

Raman Measurements of Epitaxial YBa2Cu3O7–δ Films

  • G. Burns (a1), F. H. Dacol (a1), C. A. Feild (a1), A. Gupta (a1), F. Holtzberg (a1), G. Koren (a1), R. Laibowitz (a1), T. R. McGuire (a1), A. P. Segmuller (a1) and T. K. Worthington (a1)...

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