Abstract
The dynamic magnetic response of the intermediate-valence compound EuCu2Si2 has been studied using inelastic neutron scattering. At low temperatures, strong renormalization of the 7 F 0 → 7 F 1 spin-orbit transition energy is detected; it is likely to be related to partial delocalization of the f electrons of Eu. An increase in the temperature increases the valence instability of europium and results in further changes in the magnetic excitation spectrum parameters and the appearance of an intense quasi-elastic component.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J. Röhler, in Handbook on the Physics and Chemistry of Rare Earth, Ed. by K. A. Gschneider, Jr., L. Eyring, and S. Hüfner (Elsevier, Amsterdam, 1987), Vol. 10, p. 453.
E. Holland-Moritz, E. Braun, B. Roden, et al., Phys. Rev. B 35, 3122 (1987).
E. Holland-Moritz, W. Weber, G. Michels, et al., Z. Phys. B: Condens. Matter 77, 105 (1989).
G. S. Ofelt, J. Chem. Phys. 38, 2171 (1963).
J. Röhler, D. Wohlleben, G. Kaindl, and H. Balster, Phys. Rev. Lett. 49, 65 (1982).
E. Kemly, M. Croft, V. Murgai, et al., J. Magn. Magn. Mater. 47–48, 403 (1985).
B. Perscheid, E. V. Sampathkumaran, and G. Kaindl, J. Magn. Magn. Mater. 47–48, 410 (1985).
G. Neuman, J. Langen, H. Zahel, et al., Z. Phys. B: Condens. Matter 59, 133 (1985).
B. C. Sales and R. Viswanathan, J. Low Temp. Phys. 23, 449 (1976).
P. G. Pagliuso, J. L. Sarrao, J. D. Thompson, et al., Phys. Rev. B 63, 092406 (2001).
A. P. Murani, Phys. Rev. B 50, 9882 (1994).
E. Holland-Moritz, D. Wohlleben, and M. Loewenhaupt, Phys. Rev. B 25, 7482 (1982).
U. Walter, J. Phys. Chem. Solids 45, 401 (1984).
E. A. Goremychkin, R. Osborn, and A. Yu. Muzychka, Phys. Rev B 50, 13863 (1994).
A. Yu. Muzychka, Candidate’s Dissertation in Physics and Mathematics (Joint Inst. for Nuclear Research, Dubna, 1996).
I. K. Kikoin, Zh. Éksp. Teor. Fiz. 85, 1000 (1983) [Sov. Phys. JETP 58, 582 (1983)].
K. A. Kikoin and A. S. Mishchenko, J. Phys: Condens. Matter 7, 307 (1995).
P. A. Alekseev, J.-M. Mignot, J. Rossat-Mignod, et al., J. Phys: Condens. Matter 7, 289 (1995).
P. A. Alekseev, V. N. Lazukov, R. Osborn, et al., Zh. Éksp. Teor. Fiz. 108, 1064 (1995) [JETP 81, 586 (1995)].
P. A. Alekseev, J.-M. Mignot, E. V. Nefeodova, et al., Phys. Rev. B 74, 035114 (2006).
Author information
Authors and Affiliations
Additional information
Original Russian Text © P.A. Alekseev, J.-M. Mignot, K.S. Nemkovski, V.N. Lazukov, E.V. Nefeodova, A.P. Menushenkov, A.V. Kuznetsov, R.I. Bewley, A.V. Gribanov, 2007, published in Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2007, Vol. 132, No. 1, pp. 22–26.
Rights and permissions
About this article
Cite this article
Alekseev, P.A., Mignot, J.M., Nemkovski, K.S. et al. Spin dynamics of the intermediate-valence compound EuCu2Si2 . J. Exp. Theor. Phys. 105, 14–17 (2007). https://doi.org/10.1134/S1063776107070047
Issue Date:
DOI: https://doi.org/10.1134/S1063776107070047