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Volumn 77, Issue 11, 2008, Pages

Valence instability and the quantum critical point in an extended periodic anderson model: Analysis based on the dynamical mean field theory

Author keywords

Dynamical mean field theory; Extended periodic Anderson model; Quantum critical point; Valence fluctuations; Valence instability

Indexed keywords


EID: 65549105574     PISSN: 00319015     EISSN: 13474073     Source Type: Journal    
DOI: 10.1143/JPSJ.77.114710     Document Type: Article
Times cited : (36)

References (37)
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    • For example, see, Cambridge University Press, Cambridge, U.K
    • For example, see A. C. Hewson: The Kondo Problem to Heavy Fermions (Cambridge University Press, Cambridge, U.K., 1993);
    • (1993) The Kondo Problem to Heavy Fermions
    • Hewson, A.C.1
  • 18
    • 39749156985 scopus 로고    scopus 로고
    • T. Sugibayashi and D. S. Hirashima: Proc. 5th Int. Symp. ASR-WYP-2005: Advances in the Physics and Chemistry of Actinide Compounds. J. Phys. Soc. Jpn. 75 (2006) Suppl., p. 244.
    • T. Sugibayashi and D. S. Hirashima: Proc. 5th Int. Symp. ASR-WYP-2005: Advances in the Physics and Chemistry of Actinide Compounds. J. Phys. Soc. Jpn. 75 (2006) Suppl., p. 244.
  • 27
    • 84868932290 scopus 로고    scopus 로고
    • lm(p)}) is the most difficult in the DMFT + Lanczos method (see Appendix B).
    • lm(p)}) is the most difficult in the DMFT + Lanczos method (see Appendix B).
  • 29
    • 65549125364 scopus 로고    scopus 로고
    • In the region where a converged solution could not be obtained, it is possible that the phase separation occurs where the condition n tot, 1.75 cannot be satisfied
    • tot = 1.75 cannot be satisfied.
  • 32
    • 46849087961 scopus 로고    scopus 로고
    • T. Sugibayashi, Y. Saiga, and D. S. Hirashima: Proc. Int. Conf. New Quantum Phenomena in Skutterudite and Related Systems (Skutterudite 2007), J. Phys. Soc. Jpn. 77 (2008) Suppl. A, p. 278.
    • T. Sugibayashi, Y. Saiga, and D. S. Hirashima: Proc. Int. Conf. New Quantum Phenomena in Skutterudite and Related Systems (Skutterudite 2007), J. Phys. Soc. Jpn. 77 (2008) Suppl. A, p. 278.
  • 34
    • 65549086973 scopus 로고    scopus 로고
    • This scaling comes from, the requirement that the kinetic energy and the interaction one remain in the same order of magnitude
    • This scaling comes from, the requirement that the kinetic energy and the interaction one remain in the same order of magnitude.
  • 35
    • 16344363992 scopus 로고    scopus 로고
    • For the Hamiltonian (1) with vk→v and εfk→0, the three quantities Gff(iω n, Gcf(iωn, and G fc(iωn) are related to G cc(iωn) as follows: G ff(iωn, 1/iωn+μ- ε(0)f-Σff(iωn, v, Σcf(iωn, v +Σcf(iω n), iωn+μ-ε(0) f-Σff(iωn)]2 G cc(iωn, Gcf(iω n)=v+Σcf(iω n)/iωn+μ-ε(0) f-Σff(iωn) Gcc
    • 2]. See, for example, H. O. Jeschke and G. Kotliar: Phys. Rev. B 71 (2005) 085103.
  • 36
    • 0008543873 scopus 로고    scopus 로고
    • In the present study, we chose the two-channel single-impurity model given by eq, B·39, because the lattice action in the presence of the cavity (S(o, contains two kinds of electrons, c and f. However, for the Hamiltonian (1) with, vk → v and ε fk 0, which is considered in the main text, a drastic simplification occurs that the coupling between the central site and the rest of the system affects only cc-component of (g 0)-1 due to Bcf, Bfc, Bff, 0. It is then possible to take another type of single-impurity model where the bath, consists only of c electrons. See, for example, Q. Si and G. Kotliar: Phys. Rev. Lett. 70 (1993) 3143;
    • ff = 0. It is then possible to take another type of single-impurity model where the bath, consists only of c electrons. See, for example, Q. Si and G. Kotliar: Phys. Rev. Lett. 70 (1993) 3143;
  • 37
    • 0038429560 scopus 로고    scopus 로고
    • Q. Si and G. Kotliar: Phys. Rev. B 48 (1993) 13881. We have checked that the results in the present study are in good agreement with those with use of the single-impurity model where the bath consists only of c electrons
    • Q. Si and G. Kotliar: Phys. Rev. B 48 (1993) 13881. We have checked that the results in the present study are in good agreement with those with use of the single-impurity model where the bath consists only of c electrons.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.