Optical study of antiferromagnetic single crystals Y1xPrxBa2Cu3O6 in high magnetic fields

A. Zibold, H. L. Liu, D. B. Tanner, J. Y. Wang, M. Grüninger, H. P. Geserich, T. Kopp, Th. Wolf, W. Widder, and H. F. Braun
Phys. Rev. B 55, 11096 – Published 1 May 1997
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Abstract

Infrared measurements and linear-spin-wave calculations for single-crystal Y1xPrxBa2Cu3O6 (x=0.0, 0.4, 1.0) in magnetic fields up to 30 T show that absorption features which have been ascribed to magnon excitations are very insensitive to the applied field. The substitution of Pr3+ for Y3+ leads to an additional absorption feature, which does have a strong field dependence. This excitation is assigned to an intermultiplet transition in the Pr3+ ion. The zero-field temperature dependence of this absorption shows clear evidence of an interaction between Cu and Pr spins.

  • Received 22 November 1996

DOI:https://doi.org/10.1103/PhysRevB.55.11096

©1997 American Physical Society

Authors & Affiliations

A. Zibold, H. L. Liu, and D. B. Tanner

  • Department of Physics, University of Florida, Gainesville, Florida 32611

J. Y. Wang

  • National High Magnetic Field Laboratory, Tallahassee, Florida 32306

M. Grüninger and H. P. Geserich

  • Institut für Angewandte Physik, Universität Karlsruhe, D-76128 Karlsruhe, Federal Republic of Germany

T. Kopp

  • Institut für Theorie der Kondensierten Materie, Universität Karlsruhe, D-76128 Karlsruhe, Federal Republic of Germany

Th. Wolf

  • Institut für Technische Physik, Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Federal Republic of Germany

W. Widder and H. F. Braun

  • Physikalisches Institut, Universität Bayreuth, D-95440 Bayreuth, Federal Republic of Germany

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Vol. 55, Iss. 17 — 1 May 1997

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