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періодичних видань НАН України
періодичних видань НАН України
Stripe phases — possible ground state of the high-Tc superconductors
Репозиторій DSpace/Manakin
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Stripe phases — possible ground state of the high-Tc superconductors
Тема:
General Aspects
Інший ID:
Pacs: 71.10.Fd, 71.27.+a, 74.25.–q, 74.72.–h
Посилання:
Stripe phases — possible ground state
of the high-Tc superconductors / M. Raczkowski, A.M. Oles, R. Fresard // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 411-429. — Бібліогр.: 96 назв. — англ.
Підтримка:
M. Raczkowski was supported by a Marie Curie
fellowship of the European Community program under
number HPMT2000-141. This work was supported
by the the Polish Ministry of Scientific Research and
Information Technology, Project No. 1 P03B 068 26,
and by the Ministre Franais des Affaires Etrangres
under POLONIUM 09294VH.
Дата:
2006
Переглядів:
849
Завантажень:
510
Анотація:
Based on the mean-field method applied either to the extended single-band Hubbard model or
to the single-band Peierls-Hubbard Hamiltonian we study the stability of both site-centered and
bond-centered charge domain walls. The difference in energy between these phases is found to be
small. Therefore, moderate perturbations to the pure Hubbard model, such as next nearest neighbor
hopping, lattice anisotropy, or coupling to the lattice, induce phase transitions, shown in the
corresponding phase diagrams. In addition, we determine for stable phases charge and magnetization
densities, double occupancy, kinetic and magnetic energies, and investigate the role of a finite
electron-lattice coupling. We also review experimental signatures of stripes in the superconducting
copper oxides.
