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Goryachev, E. G.
The electronic-spectrum and the metal-insulator-transition in the hubbard-model / E. G. Goryachev, E. V. Kuzmin, S. G. Ovchinnikov // Phys. Lett. A. - 1981. - Vol. 85, Is. 4. - P. 236-238, DOI 10.1016/0375-9601(81)90025-6. - Cited References: 4 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary

WOS,
Scopus
Держатели документа:
Institute of Physics, Siberian Department, the Academy of Sciences, Krasnoyarsk, Russian Federation
ИФ СО РАН
Доп.точки доступа:
Kuzmin, E. V.; Кузьмин, Евгений Всеволодович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Горячев, Евгений Геннадьевич
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Goryachev, E. G.
Metal-insulator-transition in the hubbard-model by the irreducible green-functions method / E. G. Goryachev, E. V. Kuzmin, S. G. Ovchinnikov // Journal of Physics C - Solid State Physics. - 1982. - Vol. 15, Is. 7. - P. 1481-1493, DOI 10.1088/0022-3719/15/7/015. - Cited References: 18 . - ISSN 0022-3719

РУБ Physics, Condensed Matter

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Scopus
Держатели документа:
Inst. of Phys., Acad. of Sci., Krasnoyarsk, Russian Federation
Доп.точки доступа:
Kuzmin, E. V.; Кузьмин, Евгений Всеволодович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Горячев, Евгений Геннадьевич
}
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VALKOV, V. V.
HUBBARD OPERATORS AND SPIN-WAVE THEORY OF HEISENBERG MAGNETS WITH ARBITRARY SPIN / V. V. VALKOV, S. G. OVCHINNIKOV // Theor. Math. Phys. - 1982. - Vol. 50, Is. 3. - P. 306-313, DOI 10.1007/BF01016463. - Cited References: 32 . - ISSN 0040-5779

РУБ Physics, Multidisciplinary + Physics, Mathematical

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Доп.точки доступа:
OVCHINNIKOV, S. G.; Овчинников, Сергей Геннадьевич; Val'kov, V. V.
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Goryachev, E. G.
Short-range effects in the hubbard-model / E. G. Goryachev, E. V. Kuzmin // Zhurnal Eksperimentalnoi Teor. Fiz. - 1986. - Vol. 91, Is. 3. - P. 902-912. - Cited References: 15 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary

WOS
Доп.точки доступа:
Kuzmin, E. V.; Кузьмин, Евгений Всеволодович; Горячев, Евгений Геннадьевич
}
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Goryachev, E. G.
Effects of a nonlocal correlation in the hubbard-model / E. G. Goryachev, E. V. Kuzmin // Phys. Lett. A. - 1986. - Vol. 119, Is. 1. - P. 33-36, DOI 10.1016/0375-9601(86)90640-7. - Cited References: 11 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary

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Scopus
Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
ИФ СО РАН
Доп.точки доступа:
Kuzmin, E. V.; Кузьмин, Евгений Всеволодович; Горячев, Евгений Геннадьевич
}
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Goryachev, E. G.
Ferromagnetic paramagnetic state transition in the ground-state of the hubbard-model / E. G. Goryachev, E. V. Kuzmin // Phys. Lett. A. - 1988. - Vol. 131, Is. 7-8. - P. 481-485, DOI 10.1016/0375-9601(88)90306-4. - Cited References: 9 . - ISSN 0375-9601

Ovchinnikov, S. G.
On nonhomogeneous states in a 2-dimensional hubbard-model / S. G. Ovchinnikov, I. S. Sandalov // Physica C. - 1990. - Vol. 166, Is. 1-2. - P. 197-199, DOI 10.1016/0921-4534(90)90573-W. - Cited References: 12 . - ISSN 0921-4534

РУБ Physics, Applied

WOS
Доп.точки доступа:
Sandalov, I. S.; Сандалов, Игорь Семёнович; Овчинников, Сергей Геннадьевич
}
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GORYACHEV, E. G.
VARIATIONAL APPROACH TO THE 3-PARTICLE PROBLEM IN THE HUBBARD-MODEL - THE EXACT RESULT / E. G. GORYACHEV // Zhurnal Eksperimentalnoi Teor. Fiz. - 1992. - Vol. 102, Is. 4. - P. 1280-1285. - Cited References: 7 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary

Аннотация: A well-defined procedure for the linearization of the equations of motions, which is based on the stationary principle, is proposed. In the special case of a flopped spin in the saturated ferromagnetic state (three-particle problem) the single-particle Green function is found. It is proved that regardless whether the initial (unperturbed) state is a strong coupling band (Bloch representation) or two-level atom system (Hubbard representation) the results for the single-particle Green function coincide for arbitrary values of the hamiltonian constants and electron concentration b up. In the non-trivial limit case U = infinity such a Green function coincides with the exact result of Igarashi - Ruckenstein - Schmitt - Rink [2,3] based on solving the Faddeev equations.

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GORYACHEV, E. G.
A VARIATIONAL APPROACH TO THE 3-BODY PROBLEM IN THE HUBBARD-MODEL - EXACT RESULT / E. G. GORYACHEV // Phys. Lett. A. - 1992. - Vol. 166, Is. 2. - P. 148-152, DOI 10.1016/0375-9601(92)90551-V. - Cited References: 7 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary

Аннотация: A well-defined method for linearizing the many-body equation of motion in statistical mechanics is proposed. The one-particle retarded Green function for the special case of a single reversed spin in an otherwise fully aligned band is obtained. We prove that the results for the Green function coincide independently of the initial (unperturbed) state we have started with, that is, the band energy limit E(k) = SIGMA(h)b(h)e(ikh) or the two-level atomic limit (E0, E0 + U). This strong result is valid for any parameters of the Hamiltonian and electron concentration of [F\n up\F]. In the nontrivial limited case (U=infinity) the obtained Green function coincides with the exact result of Igarashi, Ruckenstein and Schmitt-Rink based on the solution of the Faddeev equations.

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10.

SANDALOV, I. S.
FLUX PHASE, NEEL ANTIFERROMAGNETISM, AND SUPERCONDUCTIVITY IN THE T-J MODEL / I. S. SANDALOV, M. . RICHTER // Phys. Rev. B. - 1994. - Vol. 50, Is. 17. - P. 12855-12865, DOI 10.1103/PhysRevB.50.12855. - Cited References: 27 . - ISSN 0163-1829

РУБ Physics, Condensed Matter
Рубрики:
HUBBARD-MODEL
INSTABILITY
ELECTRONS

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Держатели документа:
RAS,KIRENSKY INST PHYS,KRASNOYARSK 660036,RUSSIA
ИФ СО РАН
Department of Physics, Uppsala University, Box 530, S-75121 Uppsala, Sweden
Kirensky Institute of Physics of RAS, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
RICHTER, M.; Сандалов, Игорь Семёнович
}
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11.

Sandalov, I. S.
Local gauge invariance versus slave boson-like representations in systems with strongly correlated electrons / I. S. Sandalov, M. . Richter // Phys. Scr. - 1996. - Vol. 54, Is. 4. - P. 410-416, DOI 10.1088/0031-8949/54/4/020. - Cited References: 38 . - ISSN 0281-1847

РУБ Physics, Multidisciplinary
Рубрики:
T-J MODEL
   VALENCE-BOND STATE
   DIAGRAM TECHNIQUE
   ANDERSON MODEL
   HUBBARD MODEL
   SUPERCONDUCTIVITY
   LIMIT
   PHASE
Аннотация: The flux phase solutions in the t-J model the gauge theories with Chern-Simons term, promising new exciting physics, are so far obtained only within slave-boson (or fermion) approaches, where local gauge invariance is not taken into account exactly. We inspect the possibility to do this, mainly, in the example of the t-J model The analysis of different parametrizations in the functional representation shows that (i) calculations which take into account constraints for the number of on-site-available states are describing quasiparticles in terms of the wrong local statistics, and contain gauge non-invariant objects; (ii) application of the projection technique in the slave-boson(fermion) representation reproduces the correct statistics, and is exactly equivalent to the conventional diagram technique for Hubbard operators. In the language of slave bosons this means that the Fourier transformation leading to Bloch states should be made only after accounting constraints in the measure of functional integral.

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Держатели документа:
UNIV UPPSALA,DEPT PHYS,CONDENSED MATTER THEORY GRP,S-75121 UPPSALA,SWEDEN
RUSSIAN ACAD SCI,LV KIRENSKY PHYS INST,KRASNOYARSK 660036,RUSSIA
DRESDEN UNIV TECHNOL,DEPT PHYS,MPG RES GRP ELECTRON SYST,D-01062 DRESDEN,GERMANY
ИФ СО РАН

Доп.точки доступа:
Richter, M.; Сандалов, Игорь Семёнович
}
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12.

Kuzmin, E. V.
The ground state problem in the infinite-U Hubbard model / E. V. Kuzmin // Phys. Solid State. - 1997. - Vol. 39, Is. 2. - P. 169-178, DOI 10.1134/1.1130126. - Cited References: 36 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
NAGAOKA FERROMAGNETIC STATE
   INSTABILITY
   HOLES
   BAND
Аннотация: The problem of the ground state of the electronic system in the Hubbard model for U=infinity is discussed. The author investigates the normal (singlet or nonmagnetic) N state of the electronic system over the entire range of electron densities n less than or equal to 1. It is shown that the energy of the N state epsilon(0)((1))(n) in a one-particle approximation, such as (e.g.) the extended Hartree-Fock approximation, is lower than the energy of the saturated ferromagnetic FM state epsilon(FM)(n) for all n. The dynamic magnetic susceptibility is calculated in the random phase approximation, and it is shown that the N state is stable over the entire range of electron densities: The static susceptibility (omega=0) does not have a band singularity in the zero-wave vector limit q--0. A formally exact representation is obtained for the mass operator of the one-particle Green's function, and an approximation of this operator is proposed: M-k(E)similar or equal to lambda F(E), where lambda=n(1-n)/(1-n/2)z is the kinematic interaction parameter, z is the number of nearest neighbors, and F(E) is the total single-site Green's function. For an elliptical density of states the integral equation for F(E) is solved exactly, ad it is shown that the spectral intensity rigorously satisfies the sum rule. The calculated energy of the strongly correlated N state epsilon(0)(n)epsilon(FM)(n) for all n, and in light of this relationship the author discusses the hypothesis that the ground state of the system is the normal (singlet) state in the thermodynamic limit. The electron distribution function at T

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Scopus
Держатели документа:
L.V. Kirenskii Inst. of Phys., Siberian Br. Russ. Acad. of Sci., 660036 Krasnoyarsk, Russian Federation
ИФ СО РАН

Доп.точки доступа:
Кузьмин, Евгений Всеволодович
}
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13.

Ovchinnikov, S. G.
Quasiparticles in strongly correlated electronic systems in cuprate oxides / S. G. Ovchinnikov // Uspekhi Fiz. Nauk. - 1997. - Vol. 167, Is. 10. - P. 1043-1068. - Cited References: 227 . - ISSN 0042-1294

РУБ Physics, Multidisciplinary
Рубрики:
T-J-MODEL
   HIGH-TEMPERATURE SUPERCONDUCTORS
   DIMENSIONAL HUBBARD-MODEL
   QUASI-PARTICLE DISPERSION
   HEISENBERG-ANTIFERROMAGNET SR2CUO2CL2
   ANGLE-RESOLVED PHOTOEMISSION
   CHARGE FLUCTUATION REGIME
   SADDLE-POINT SINGULARITY
   SINGLET-TRIPLET MODEL
   LA-SR-CU
Аннотация: New experimental and theoretical results on the electronic structure and spectral properties of quasiparticles in cuprate oxides are reviewed. It is shown that the electronic structure transforms from antiferromagnetic insulators to optimally doped high-temperature superconductors as the doping level is varied. The experimental methods considered are primarily angular resolved photoelectron spectroscopy (ARPES), neutron scattering, and NMR. Two types of electronic structure calculations for data interpretation purposes are considered, namely, exact numerical methods for finite clusters (exact diagonalisation and the quantum Monte Carlo method) and approximate schemes for the infinite lattice. As a result, a coherent unified picture emerges, in which the magnetic polaron of a weakly doped antiferromagnetic lattice transforms into a system of Fermi particles dressed by short-range antiferromagnetic type spin fluctuations. In the region of weakly doped metal compositions, deviations from Fermi-liquid properties are seen, such as the failure of Luttinger's theorem, shadowy photoemission bands, and the spin pseudogap effect in spectral and thermodynamic measurements. The situation in the neighbourhood of the insulator-metal concentration transition is described as least understood.

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Доп.точки доступа:
Овчинников, Сергей Геннадьевич
}
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14.

Aplesnin, S. S.
Dimer state in the two-dimensional anisotropic alternated-exchange Heisenberg model / S. S. Aplesnin // Phys. Solid State. - 1998. - Vol. 40, Is. 6. - P. 986-990, DOI 10.1134/1.1130463. - Cited References: 14 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
SPIN-PEIERLS
   HUBBARD-MODEL
   SUPERCONDUCTIVITY
   ANTIFERROMAGNETS
Аннотация: An analysis is made of the two-dimensional Heisenberg model with S = 1/2, anisotropic exchange interaction between nearest neighbors, and alternating exchange in two directions, [100] and [010] (corresponding to condensation of the (pi,pi) mode) and in one direction [100] (corresponding to condensation of the (pi,0) mode), The quantum Monte Carlo method is used to calculate the thermodynamic characteristics and the spin correlation functions which are used as the basis to determine the boundary of stability of an anisotropic antiferromagnetic with respect to alternation of exchange delta = (1 - J(x,y) / J(z))(0.4) in the (pi,pi) model and delta = (1 - J(x,y) / J(z))(0.31) in the (pi,0) model. In the (pi,0) model a disordered quantum state exists in the range (1 - J(x,y) / J(z))(0.31) delta (0.3-0.35). The energy (E - 0.68)

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Аплеснин, Сергей Степанович
}
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15.

Kuz'min, E. V.
The singlet state in the Hubbard model with U=infinity / E. V. Kuz'min, I. O. Baklanov // J. Exp. Theor. Phys. - 1998. - Vol. 87, Is. 6. - P. 1159-1166, DOI 10.1134/1.558607. - Cited References: 16 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
HOLES
Аннотация: We discuss, in connection with the problem of the ground state in the Hubbard model with U = infinity, the normal (nonmagnetic) N-state of a system over the entire range of electron concentrations n less than or equal to 1. It is found that in a one-particle approximation, e. g., in the generalized Hartree-Fock approximation, the energy epsilon(0)(n) of the N-state is lower than the energy epsilon(FM)(n) of a saturated ferromagnetic state for all values of n. Using the random phase approximation we calculate the dynamical magnetic susceptibility and show that the N-state is stable for all values of n. A formally exact representation is derived for the mass operator of the one-particle electron Green's function, and its expression in the self-consistent Born approximation is obtained. We discuss the first Born approximation and show that when correlations are taken into account, the attenuation vanishes on the Fermi surface and the electron distribution function at T = 0 acquires a Migdal discontinuity, whose magnitude depends on n. The energy of the N-state in this approximation is still lower than epsilon(FM)(n) for n 1.We show that the spin correlation functions are isotropic, which is a characteristic feature of the singlet states of the system. We calculate the spin correlation function for the nearest neighbors in the zeroth approximation as a function of n. Finally, we conclude that the singlet state of the system in the thermodynamic limit is the ground state. (C) 1998 American Institute of Physics. [S1063-7761(98)01712-0].

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Держатели документа:
Krasnoyarsk State Univ, Krasnoyarsk 660062, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Baklanov, I. O.
}
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16.

Are there two types of f-electrons in Pr-metal? / U. . Lundin [et al.] // Physica B. - 1999. - Vol. 259-61. - P. 231-232, DOI 10.1016/S0921-4526(98)00790-X. - Cited References: 1 . - ISSN 0921-4526

РУБ Physics, Condensed Matter
Рубрики:

Кл.слова (ненормированные):
band calculations -- Hubbard model -- f-electrons
Аннотация: We show that in order to properly describe the bonding properties of strongly correlated systems, here demonstrated for praseodymium metal, it is necessary to split the f-electron system into two parts. Using perturbation theory from the atomic limit we show that LDA-based calculations with f-electrons in the core can be considered as the limit of an infinite Hubbard U. Then, the correction to the total energy proportional to 1/U makes the upper f(2)-->f(3) intra-atomic transitions (IT) important. Mixing interaction and f-f-hopping delocalize these IT and some of them become populated. These IT give an additional contribution to the cohesive energy. This gain in energy is the reason for the separation of the f-electron system into localized (with reduced spectral weight) and delocalized ones. (C) 1999 Elsevier Science B.V. All rights reserved.

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Держатели документа:
Univ Uppsala, Dept Phys, Condensed Matter Theory Grp, S-75121 Uppsala, Sweden
LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Condensed Matter Theory Group, Department of Physics, University of Uppsala, P.O. Box 530, 751 21 Uppsala, Sweden
Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Lundin, U.; Sandalov, I.; Eriksson, O.; Johansson, B.; International Conference on Strongly Correlated Electron Systems(1998 ; JUL 15-18 ; Paris, France)
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17.

On the non-orthogonality problem in the description of quantum devices / J. . Fransson [et al.] // Physica B. - 1999. - Vol. 272, Is. 1-4. - P. 28-30, DOI 10.1016/S0921-4526(99)00343-9. - Cited References: 8 . - ISSN 0921-4526

РУБ Physics, Condensed Matter
Рубрики:

Кл.слова (ненормированные):
non-orthogonality -- current -- tunneling -- Correlation methods -- Electric contacts -- Electric currents -- Electron energy levels -- Electron tunneling -- Equations of motion -- Green's function -- Mathematical operators -- Matrix algebra -- Hubbard operators -- Potential barriers -- Tunneling currents -- Semiconductor quantum dots
Аннотация: An approach which allows to include the corrections from non-orthogonality of electron states in contacts and quantum dots is developed. Comparison of the energy levels and charge distributions of electrons in 1D quantum dot (QD) in equilibrium, obtained within orthogonal (OR) and non-orthogonal representations (NOR), with the exact ones shows that the NOR provides a considerable improvement, for levels below the top of barrier. The approach is extended to non-equilibrium states. A derivation of the tunneling current through a single potential barrier is performed using equations of motion for correlation functions. A formula for transient current derived by means of the diagram technique for Hubbard operators is given for the problem of QD with strongly correlated electrons interacting with electrons in contacts. The non-orthogonality renormalizes the tunneling matrix elements and spectral weights of Green functions. (C) 1999 Elsevier Science B.V. All rights reserved.

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Держатели документа:
Univ Uppsala, Condensed Matter Theory Grp, S-75121 Uppsala, Sweden
RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Condensed Matter Theory Group, Uppsala University, Box 530, 751 21, Uppsala, Sweden
Kirensky Institute of Physics, RAS, 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Fransson, J.; Eriksson, O.; Johansson, B.; Sandalov, I. S.; Сандалов, Игорь Семёнович; International Conference on Nonequilibrium Carrier Dynamics in Semiconductors(11 ; 1999 ; July ; 19-23 ; Kyoto, Japan)
}
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18.

Lundin, U.
Mott-Hubbard transition in the N-orbital Hubbard model / U. . Lundin, I. . Sandalov, B. . Johansson // Physica B. - 2000. - Vol. 281. - P. 836-837, DOI 10.1016/S0921-4526(99)00980-1. - Cited References: 5 . - ISSN 0921-4526

РУБ Physics, Condensed Matter

Кл.слова (ненормированные):
Hubbard model -- Mott-Hubbard transition -- d(1) systems
Аннотация: The Mort-Hubbard insulator-metal transition (MHT) is studied for the N-orbital symmetrical Hubbard model with diagonal (t(1)) and non-diagonal(t(2)) hopping matrix elements. In the paramagnetic state (PM) For an n = 1 filling the non-diagonal hopping gives rise to two wide Hubbard sub-bands with small spectral weight of the order of similar to 1/N and 2N - 2 narrow sub-bands with a large weight similar to (1 - 1/N). No orbital polarization arises in this solution. In some directions in the (t(1), t(2))-plane the insulating energy gap in the density of stares is closed in the vicinity of a critical Hubbard repulsion of U-c similar to z(t(1) + (N - 1)t(2)) (z-coordination number), whereas the narrow bands in this region of parameters still correspond to a deeply correlated phase (with bandwidth z(t(1) - t(2))). (C) 2000 Elsevier Science B.V. All rights reserved.

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Держатели документа:
Univ Uppsala, Dept Phys, Condensed Matter Theory Grp, S-75121 Uppsala, Sweden
RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Sandalov, I.; Johansson, B.; Yamada Conference on Strongly Correlated Electon Systems(51 ; 1999 ; Aug. 24-28 ; NAGANO, JAPAN))
}
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19.

Kuz'min, E. V.
Comparison of superconductivity in Sr2RuO4 and copper oxides / E. V. Kuz'min, S. G. Ovchinnikov, I. O. Baklanov // Phys. Rev. B. - 2000. - Vol. 61, Is. 22. - P. 15392-15397, DOI 10.1103/PhysRevB.61.15392. - Cited References: 21 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
T-J MODEL
   HUBBARD-MODEL
   LAYERED PEROVSKITE
   ELECTRONS
Аннотация: To compare the superconductivity in strongly correlated electron systems with the antiferrornagnetic fluctuations in the copper oxides and with the ferromagnetic fluctuations in Sr2RuO4 a t-J-l model is proposed. The antiferromagnetic coupling J results in the superconducting state of d(x2-y2) symmetry and the ferromagnetic coupling I results in the spin-triplet p-type state. The difference in the gap anisotropies provides the large difference in T-c values, for the typical values of the coupling constants: T-c similar to 1 K for the ruthenste and T-c similar to 100 K for the cuprates.

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Держатели документа:
Krasnoyarsk State Univ, Krasnoyarsk 660062, Russia
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Baklanov, I. O.
}
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20.

Microscopic model of the coexistence of superconductivity and ferromagnetism in the hybrid ruthenate-cuprate oxide RuSr2GdCu2O8 / E. V. Kuz'min [et al.] // J. Exp. Theor. Phys. - 2000. - Vol. 91, Is. 2. - P. 353-360, DOI 10.1134/1.1311995. - Cited References: 37 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
T-J MODEL
   HUBBARD-MODEL
   LAYERED PEROVSKITE
   SR2RUO4
   ELECTRONS
   COPPER
   SPECTRUM
Аннотация: A microscopic t-J-I model with competing antiferromagnetic (J) and ferromagnetic (I) exchange interactions is proposed for strongly correlated electrons in RuSr2GdCu2O8 . It is assumed that J much greater than I for CuO2 layers and J much less than I for RuO2 layers. A superconducting solution of d(x2-y2) symmetry was obtained for the CuO2 layers while competition between ferromagnetism and p-type triplet superconducting pairing is obtained for RuO2 layers. It is shown that the RuO2 layers have a lower carrier concentration in the Hubbard subband formed by coupled ((d(xy)-p)-pi) orbitals compared with a bulk Sr2RuO4 crystal, which leads to stabilization of the ferromagnetic state in the RuO2 layer. (C) 2000 MAIK "Nauka/Interperiodica".

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Публикация на русском языке Микроскопическая модель сосуществования сверхпроводимости и ферромагнетизма в гибридном рутенатно-купратном оксиде RuSr2GdCu2O8 [Текст] / Е. В. Кузьмин [и др.] // Журн. эксперим. и теор. физ. - 2000. - Т. 118 Вып. 2.- С.404

Держатели документа:
Krasnoyarsk State Univ, Krasnoyarsk 660062, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
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Доп.точки доступа:
Kuz'min, E. V.; Кузьмин, Евгений Всеволодович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Baklanov, I. O.; Бакланов И. О.; Goryachev, E. G.; Горячев, Евгений Геннадьевич
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