Abstract
Inelastic neutron scattering has been employed to study in detail the low-energy crystal-field (CEF) excitations of Ho3+ in tetragonal antiferromagnetic (AF) Ho0.1Y0.9Ba2Cu3O6.13. We observe a splitting of the lowest excited Γ5 doublet atT=1.5 K. This splitting is explained as resulting from the exchange interaction with the AF subsystem of copper spins. The corresponding susceptibility at the Ho3+ site has a symmetry lower than the tetragonal one of the CEF potential and, as a result, produces the splitting. The value of the coupling between Ho3+ and Cu2+ ionsJ ex=2.4 meV is derived from the experimentally observed value of the splitting ΔE=0.1 meV and parameters of the AF subsystem, known from the neutron scattering experiments. Some possible consequences of the rare-earth (RE)-copper exchange are discussed, including the interaction between RE ions via the virtual exchange by spin waves.
Similar content being viewed by others
References
Mesot, J., Allenspach, P., Staub, U., Furrer, A., Mutka, H.: Phys. Rev. Lett.70, 865 (1993); Mesot, J., Allenspach, P., Staub, U., Furrer, A., Mutka, H., Osborn, R., Taylor, A.D.: Phys. Rev. B47, 6027 (1993)
Soderholm, L., Loong, C.-K., Goodman, G.L., Dabrowski, B.D.: Phys. Rev. B43, 7923 (1991)
Furrer, A., Brüesch, P., Unternährer, P.: Phys. Rev. B157, 4616 (1988)
Tranquada, J.M., Shirane, G., Keimer, B., Shamoto, S., Sato, M.: Phys. Rev. B40, 4503 (1989)
Rossat-Mignod, J., Burlet, P., Jurgens, M.J., Vettier, C., Regnault, L.P., Henry, J.Y., Ayache, C., Forio, L., Noel, H., Potei, M., Gougeon, P., Levet, J.C.: J. Phys.49, C8 2119 (1988)
Amoretti, G., Blaise, A., Caciuffo, R., Fournier, J.M., Hutchings, M.T., Osborn, R., Taylor, A.D.: Phys. Rev. B40, 1856 (1989)
Carlile, C.J., Adams, M.A.: Physica B182, 431 (1992)
Abrikosov, A.A., Gor'kov, L.P., Dzyaloshinskii, I.E.: Quantum field theoretical methods in statistical physics. New York: Pergamon Press 1965
Staub, U., Fauth, F., Guillaume, M., Mesot, J., Furrer, A., Dosanjh, P., Zhou, H.: Europhys. Lett.21, 845 (1993)
Chen, Y.Y., Lai, C.C., Chiou, B.S., Ho, J.C., Ku, H.C.: Phys. Rev. B47, 12178 (1993)
Guillaume, M., Staub, U., Fauth, F., Mesot, J., Furrer, A., Carlile, C.J.: Physica C223, 333 (1994)
Maleyev, S.V.: Zh. Eksp. Teor. Fiz.94, 280 (1988); (Sov. Ph. JETP67, 157 (1988)
Martindale, J.A., Barrett, S.E., O'Hara, K.E., Slichter, C.P., Lee W.C., Ginsberg, D.M.: Phys. Rev. B47, 9155 (1993)
Braune, S., Maleyev, S.V.: Z. Phys. B81, 69 (1990)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Aristov, D.N., Maleyev, S.V., Guillaume, M. et al. Additional raising of the degeneracy of CEF-split Ho3+ ions by antiferromagnetic spin-waves in Ho0.1Y0.9Ba2Cu3O6.13 . Z. Physik B - Condensed Matter 95, 291–296 (1994). https://doi.org/10.1007/BF01343955
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01343955