Abstract
We use the Popov-Fedotov representation of spin operators to construct an effective action for a Kondo lattice model with quenched disorder at finite temperatures. We study the competition between the Kondo effect and frozen spin order in Ising-like spin glass. We present the derivation of new mean-field equations for the spin-glass order parameter and analyze the effects of screening of localized spins by conduction electrons on the spin-glass phase transition.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
N. Grewe and F. Steglich, in Handbook of the Physics and Chemistry of Rare Earths, Ed. by K. A. Gschneider, Jr., and L. Eyring (Elsevier, Amsterdam, 1991), Vol. 14, p. 343.
A. Rosch, A. Schröder, O. Stockert, and H. V. Löhneysen, Phys. Rev. Lett. 79, 159 (1997).
A. Schröder, G. Aeppli, E. Bucher, et al., Phys. Rev. Lett. 80, 5623 (1998).
S. Doniach, Physica B (Amsterdam) 91, 231 (1977).
K. A. Kikoin, M. N. Kiselev, and A. S. Mishchenko, Pis’ma Zh. Éksp. Teor. Fiz. 60, 583 (1994) [JETP Lett. 60, 600 (1994)]; Zh. Éksp. Teor. Fiz. 112, 729 (1997) [JETP 85, 399 (1997)]; J. R. Iglesias, C. Lacroix, and B. Coqblin, Phys. Rev. B 56, 11820 (1997).
P. Coleman and N. Andrei, J. Phys.: Condens. Matter 1, 4057 (1989).
S. Sachdev, N. Read, and R. Oppermann, Phys. Rev. B 52, 10286 (1995); A. Sengupta and A. Georges, ibid. 52, 10295 (1995).
A. Yu. Zyuzin and B. Z. Spivak, Pis’ma Zh. Éksp. Teor. Fiz. 43, 185 (1986) [JETP Lett. 43, 234 (1986)]; L. N. Bulaevskii and S. V. Panyukov, Pis’ma Zh. Éksp. Teor. Fiz. 43, 190 (1986) [JETP Lett. 43, 240 (1986)].
V. N. Popov and S. A. Fedotov, Zh. Éksp. Teor. Fiz. 94, 193 (1988) [Sov. Phys. JETP 67, 535 (1988)].
R. Oppermann and A. Muller-Groeling, Nucl. Phys. B 401, 507 (1993).
F. Bouis and M. Kiselev, Physica B (Amsterdam) 259–261, 195 (1999).
D. Sherrington and S. Kirkpatrik, Phys. Rev. Lett. 35, 1972 (1975).
K. Binder and A. P. Young, Rev. Mod. Phys. 58, 801 (1986).
N. Read and D. M. Newns, J. Phys. C 16, 3273 (1983).
A. M. Tsvelik and P. B. Wiegmann, Adv. Phys. 32, 453 (1983).
Author information
Authors and Affiliations
Additional information
From Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 71, No. 6, 2000, pp. 359–365.
Original English Text Copyright © 2000 by Kiselev, Oppermann.
This article was submitted by the authors in English.