Phase separation in the Hubbard model using the dynamical cluster approximation
نویسندگان
چکیده
منابع مشابه
Phase separation in the Hubbard model.
The Hartree-Fock ground-state phase diagram of the one-dimensional Hubbard model is calculated in the μ−U plane, restricted to phases with no charge density modulation. This allows antiferromagnetism, saturated ferromagnetism, spiral spin density waves and a collinear structure with unit cell ↑↑↓↓. The spiral phase is unstable against phase separation near quarter-, halfand three-quarter-fillin...
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15 صفحه اولPhase separation in the two-dimensional Hubbard model.
E. Khatami,1,2 K. Mikelsons,1,2 D. Galanakis,1 A. Macridin,3 J. Moreno,1 R. T. Scalettar,4 and M. Jarrell1 1Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA 2Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA 3Fermilab, P.O. Box 500, Batavia, Illinois 60510, USA 4Department of Physics, University of California, Davis, C...
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The paramagnetic phase diagram of the Hubbard model with nearest-neighbor and next-nearest-neighbor NNN hopping on the Bethe lattice is computed at half-filling and in the weakly doped regime using the self-energy functional approach for dynamical mean-field theory. NNN hopping breaks the particle-hole symmetry and leads to a strong asymmetry of the electron-doped and hole-doped regimes. Phase ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2006
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.74.085104