Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Andrey A. Katanin"'
Autor:
Saeed Rahmanian Koshkaki, Zahed Allahyari, Artem R. Oganov, Vladimir L. Solozhenko, Ilya B. Polovov, Alexander. S. Belozerov, Andrey A. Katanin, Vladimir I. Anisimov, Evgeny V. Tikhonov, Guang-Rui Qian, Konstantin V. Maksimtsev, Andrey S. Mukhamadeev, Andrey V. Chukin, Aleksandr V. Korolev, Nikolay V. Mushnikov, Hao Li
Publikováno v:
The Journal of Chemical Physics. 157:124704
The discovery of new magnetic materials is a big challenge in the field of modern materials science. We report the development of a new extension of the evolutionary algorithm USPEX, enabling the search for half-metals (materials that are metallic on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::734ebbea8eaa03a10c0f1f99126928c2
https://doi.org/10.1063/5.0113745
https://doi.org/10.1063/5.0113745
Strong repulsive interactions between electrons can lead to a Mott metal-insulator transition. The Dynamical Mean-Field Theory (DMFT) explains the critical end-point and hysteresis region with single-particle concepts such as the spectral function an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::998499e95489a2cdf05ea54afa594505
Autor:
Alexander I. Lichtenstein, Alessandro Toschi, M. Karolak, Karsten Held, E. Şaşιoğlu, Andreas Hausoel, Giorgio Sangiovanni, Andrey A. Katanin
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017)
Nature Communications
Nature Communications
Some Bravais lattices have a particular geometry that can slow down the motion of Bloch electrons by pre-localization due to the band-structure properties. Another known source of electronic localization in solids is the Coulomb repulsion in partiall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b13641f51c802dc9d86b0dec27e8885e
https://doaj.org/article/3adc5a72b3bd4a2ebb4516d9b82076a9
https://doaj.org/article/3adc5a72b3bd4a2ebb4516d9b82076a9
We study the phase diagram and quantum critical region of one of the fundamental models for electronic correlations: the periodic Anderson model. Employing the recently developed dynamical vertex approximation, we find a phase transition between a ze
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c69b8e70304217f5365d9224c2dc76ed
Publikováno v:
Solid State Phenomena. :3-7
Thermodynamic properties of cubic Heisenberg ferromagnets with competing exchange interactions are considered near the frustration point where the coefficient D in the spin-wave spectrum Ek ~ Dk2vanishes. Within the Dyson-Maleev formalism it is found
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c98134fa6a7bcd588bc4b156405ddfbf
https://doi.org/10.4028/www.scientific.net/ssp.233-234.3
https://doi.org/10.4028/www.scientific.net/ssp.233-234.3
Publikováno v:
Physical Review B. 96
We study properties of magnetic nanoparticles adsorbed on the halloysite surface. For that a distinct magnetic Hamiltonian with a random distribution of spins on a cylindrical surface was solved by using a nonequilibrium Monte Carlo method. The param
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::281f8d70eb67a76852987612693ce869
https://doi.org/10.1103/physrevb.96.224404
https://doi.org/10.1103/physrevb.96.224404
Publikováno v:
Phys Rev Lett
Physical Review Letters
Physical Review Letters
A general understanding of quantum phase transitions in strongly correlated materials is still lacking. By exploiting a cutting-edge quantum many-body approach, the dynamical vertex approximation, we make important progress, determining the quantum c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74da7159e117ea48f6c0e1449dc0ac29
https://doi.org/10.1103/physrevlett.119.046402
https://doi.org/10.1103/physrevlett.119.046402
Publikováno v:
Phys. Rev. B
Physical Review B
Physical Review B
We investigate non-equilibrium properties of the frustrated Heisenberg antiferromagnets on the triangular lattice. Nonequilibrium critical relaxation of frustrated Heisenberg antiferromagnets shows a dynamic transition (or, at least, sharp crossover)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60d055caa4a91c8b688bbb3648a90ea9
https://doi.org/10.1103/physrevb.95.134437
https://doi.org/10.1103/physrevb.95.134437
Autor:
Alexander I. Lichtenstein, E. A. Stepanov, Andrey A. Katanin, E. G. C. P. van Loon, Mikhail I. Katsnelson, Alexey N. Rubtsov
Publikováno v:
Physical Review B, 93, 16
Phys. Rev. B
Physical Review B
Physical Review B, 93, 4, pp. 16
Phys. Rev. B
Physical Review B
Physical Review B, 93, 4, pp. 16
We propose an efficient dual boson scheme, which extends the DMFT paradigm to collective excitations in correlated systems. The theory is fully self-consistent both on the one- and on the two-particle level, thus describing the formation of collectiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8af4ad434e00ca3940b6b39dad50ff06
https://doi.org/10.1103/physrevb.93.045107
https://doi.org/10.1103/physrevb.93.045107
Publikováno v:
Nuclear Physics B. 814:439-460
We consider a quantum two-dimensional O ( N ) ⊗ O ( 2 ) / O ( N − 2 ) ⊗ O ( 2 ) diag nonlinear sigma model for frustrated spin systems and formulate its 1 / N -expansion which involves fluctuating scalar and vector fields describing kinematic a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f79138627a126603bda3951e96b7a709
https://doi.org/10.1016/j.nuclphysb.2009.01.004
https://doi.org/10.1016/j.nuclphysb.2009.01.004