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Pis'ma v Zh. Èksper. Teoret. Fiz., 2005, Volume 82, Issue 4, Pages 217–222 (Mi jetpl1537)  

This article is cited in 56 scientific papers (total in 56 papers)


“Destruction” of the Fermi surface due to pseudogap fluctuations in strongly correlated systems

È. Z. Kuchinskii, I. A. Nekrasov, M. V. Sadovskii

Institute of Electrophysics, RAS Urals Branch

Abstract: We generalize the dynamical-mean field theory (DMFT) by including into the DMFT equations dependence on correlation length of pseudogap fluctuations via additional (momentum dependent) self–energy $\Sigma_\mathbf k$. This self – energy describes non-local dynamical correlations induced by short-ranged collective SDW-like antiferromagnetic spin (or CDW-like charge) fluctuations. At high enough temperatures these fluctuations can be viewed as a quenched Gaussian random field with finite correlation length. This generalized DMFT+$\Sigma_\mathbf k$ approach is used for the numerical solution of the weakly doped one-band Hubbard model with repulsive Coulomb interaction on a square lattice with nearest and next nearest neighbour hopping. The effective single impurity problem is solved by numerical renormalization group (NRG). Both types of strongly correlated metals, namely (i) doped Mott insulator and (ii) the case of bandwidth $W\lesssim U$ ($U$ – value of local Coulomb interaction) are considered. Calculating profiles of spectral densities for different parameters of the model we demonstrate the qualitative picture of Fermi surface “destruction” and formation of “Fermi arcs” due to pseudogap fluctuations in qualitative agreement with ARPES experiments. “Blurring” of the Fermi surface is enhanced with the growth of the Coulomb interaction.

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English version:
Journal of Experimental and Theoretical Physics Letters, 2005, 82:4, 198–203

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Document Type: Article
PACS: 71.10.Fd, 71.10.Hf, 71.27.+a, 71.30.+h, 74.72.-h
Received: 09.06.2005
Language: English

Citation: È. Z. Kuchinskii, I. A. Nekrasov, M. V. Sadovskii, ““Destruction” of the Fermi surface due to pseudogap fluctuations in strongly correlated systems”, Pis'ma v Zh. Èksper. Teoret. Fiz., 82:4 (2005), 217–222; JETP Letters, 82:4 (2005), 198–203

Citation in format AMSBIB
\by \`E.~Z.~Kuchinskii, I.~A.~Nekrasov, M.~V.~Sadovskii
\paper ``Destruction'' of the Fermi surface due to pseudogap fluctuations in strongly correlated systems
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2005
\vol 82
\issue 4
\pages 217--222
\jour JETP Letters
\yr 2005
\vol 82
\issue 4
\pages 198--203

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    This publication is cited in the following articles:
    1. Sadovskii M.V., Nekrasov I.A., Kuchinskii E.Z., Pruschke T., Anisimov V.I., “Pseudogaps in strongly correlated metals: A generalized dynamical mean-field theory approach”, Physical Review B, 72:15 (2005), 155105  crossref  adsnasa  isi  elib  scopus
    2. Granath M., “Nodal-antinodal dichotomy and magic doping fractions in a stripe-ordered antiferromagnet”, Physical Review B, 74:24 (2006), 245112  crossref  adsnasa  isi  elib  scopus
    3. Kuchinskii E.Z., Sadovskii M.V., “Non-Fermi-liquid behavior in the fluctuating gap model: From the pole to a zero of the Green's function”, Zh Èksper Teoret Fiz, 103:3 (2006), 415–427  crossref  adsnasa  isi  scopus
    4. Kuchinskii E.Z., Nekrasov I.A., Sadovskii M.V., “Pseudogaps: introducing the length scale into dynamical mean-field theory”, Low Temperature Physics, 32:4–5 (2006), 398–405  crossref  adsnasa  isi  elib  scopus
    5. Kusunose H., “Influence of spatial correlations in strongly correlated electron systems: Extension to dynamical mean field approximation”, J Phys Soc Japan, 75:5 (2006), 054713  crossref  adsnasa  isi  elib  scopus
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    7. Held K., “Electronic structure calculations using dynamical mean field theory”, Advances in Physics, 56:6 (2007), 829–926  crossref  adsnasa  isi  scopus
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    10. Kuchinskii E.Z., Nekrasov I.A., Pchelkina Z.V., Sadovskii M.V., “Pseudogap behavior in Bi2Ca2SrCu2O8: Results of the generalized dynamical mean-field approach”, Zh Èksper Teoret Fiz, 104:5 (2007), 792–804  crossref  adsnasa  isi  scopus
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