Preferences help
enabled [disable] Abstract
Number of results
2008 | 114 | 1 | 7-14
Article title

Stabilization of Kondo Semiconductor State by Sb Doping of CeNi_{1-δ}Sn_{1+δ} and the General Criterion of Its Appearance

Title variants
Languages of publication
Semimetallic off-stoichiometric CeNi_{1-δ}Sn_{1+δ-x}Sb_x system with δ≈0.06 is shown to transform into a Kondo semiconductor upon the substitution of few percent of Sb for Sn. The full-gap formation is associated with f-electron localization induced by the combined effect of the collective Kondo-singlet formation and the atomic disorder. Namely, the extra valence electrons introduced with the Sb doping (one per Sb atom) contribute additionally to the formation of the collective Kondo spin-singlet state at low temperatures, as seen by a substantial reduction of the magnetic susceptibility. The precise general definition of the Kondo semiconductor is provided and the difference with either the simple band or the Mott-Hubbard insulators is stressed.
Physical description
  • 1. S.K. Malik, D.T. Adroja, Phys. Rev. B 43, 6277 (1991);H. Kumigashira, T. Sato, T. Takahashi, S. Yoshii, M. Kasaya, Phys. Rev. Lett. 82, 1943 (1999)
  • 2. Cf. e.g. T. Takabatake, F. Teshima, H. Fuji, S. Nishigori, T. Suzuki, T. Fujita, Y. Yamaguchi, J. Sakuray, D. Jackard, Phys. Rev. B 41, 9607 (1990);in the monocrystalline samples a plateau in temperature dependence ofρ(T ) has been observed, see: T.E. Mason, G. Aeppli, A.P. Ramirez, K.N. Clausen, C. Broholm, N. Stúcheli, E. Bucher, T.T.M. Paalstra, Phys. Rev. Lett. 69, 490 (1992);see also G. Nakamoto, T. Takabatake, H. Fuji, A. Minami, K. Maezawa, I. Oguro, A.A. Menovsky, J. Phys. Soc. Japan 64, 4834 (1995)
  • 3. (a) A.Ślebarski, J. Spałek, Phys. Rev. Lett. 95, 046402 (2005);(b) J. Spałek, A.Ślebarski, J. Goraus, L. Spałek, K. Tomala, A. Zarzycki, A. Hackemer, Phys. Rev. B 72, 155112 (2005)
  • 4. The Kondo insulator composed of a filled hybridized band of heavy quasiparticles has been considered in: S. Doniach, P. Fazekas, Adv. Phys. 65, 1171 (1992);R. Doradziński J. Spałek, Phys. Rev. B 56, R14239 (1997);ibid. 58, 3293 (1998). For a brief review see: J. Spałek, R. Doradziński, Acta Phys. Pol. A 96, 677 (1999);ibid. , 97 (2071) 00
  • 5. A similar effect has been observed for CeNiSn doped with Cu, Co, and Pt, see: T. Takabatake, Y. Echizen, T. Yoshino, K. Kobayashi, G. Nakamoto, H. Fujii, M. Sera, Phys. Rev. B 59, 13878 (1999);see also: F.G. Aliev, V.V. Moshchalkov, M.K. Zalyalyutdinov, G.I. Pak, R.V. Scolozdra, P.A. Alekseev, V.N. Lazukov, I.P. Sadikov, Physica B 163, 358 (1990);T. Enstra, G.J. Nieuwenhuys, K.H.J. Buschow, J. Mydosh, J. Magn. Magn. Mater. 108, 69 (1992)
  • 6. The effect of inclusions in CeNiSn has been discussed by Mason et al. in Ref. [2];see also: G. Nakamoto, T. Takabatake, Y. Bando, F. Fuji, K. Izawa, T. Suzuki, T. Fujita, A. Minami, I. Oguro, L.T. Tai, A.A. Menovsky, Physica B 206-207, 840 (1995);G. Nakamoto, T. Takabatake, F. Fuji, A. Minami, K. Maezawa, I. Oguro, A.A. Menovsky, J. Phys. Soc. Japan 64, 4834 (1995)
  • 7. A.Ślebarski, J. Spałek, M. Gamża, A. Hackemer, Phys. Rev. B 73, 205115 (2006)
  • 8. B. Buschinger, M. Weiden, O. Trovarelli, P. Hellmann, C. Geibel, F. Steglich, J. Phys., Condens. Matter 10, 2021 (1998)
Document Type
Publication order reference
YADDA identifier
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.