Моля, използвайте този идентификатор за цитиране или линк към този публикация:
http://elartu.tntu.edu.ua/handle/123456789/1561
Заглавие: | Energy spectrum and metal-insulator transition in system with Anderson-Hubbard centers |
Автори: | Скоренький, Юрій Любомирович Крамар, Олександр Іванович Дідух, Леонід Дмитрович Skorenkyy, Yuriy Kramar, Oleksandr Didukh, Leonid |
Дата на Публикуване: | 13-Яну-2012 |
Date of entry: | 13-Яну-2012 |
Ключови Думи: | сильні міжелектронні взаємодії перехід метал-діелектрик |
Резюме: | Energy spectrum of a model of narrow-band metal into which the periodically spaced Anderson-Hubbard centers are introduced has been studied. Hybridization with conduction band results in the indirect exchange interaction which is different from the interactions between localized magnetic moments and strong on-site Coulomb interaction. To study effect of the lattice deformation under the external pressure (or the self-contraction of the lattice) on electrical properties of the system, the phonon term and elastic energy have been taken into account. The equilibrium values of lattice strain and chemical potential have been calculated self-consistently for non-zero temperatures. Within the Green function approach, the energy spectrum has been calculated as function of model parameters, temperature and external pressure. Our results show that there exists a threshold value of the external pressure above which energy gap value decreases rapidly with temperature and system becomes a correlated metal. |
Описание: | Надіслано для публікації у Journal of Physics: Conference Series |
URI: | http://elartu.tntu.edu.ua/handle/123456789/1561 |
Content type: | Article |
Показва се в Колекции: | Наукові публікації працівників кафедри фізики |
Файлове в Този Публикация:
Файл | Описание | Размер | Формат | |
---|---|---|---|---|
skorenkyy_sces11.pdf | 450,27 kB | Adobe PDF | Изглед/Отваряне | |
skorenkyy_sces11__COVER.png | 121,71 kB | image/png | Изглед/Отваряне | |
skorenkyy_sces11.djvu | 67,98 kB | DjVu | Изглед/Отваряне |
Публикацияте в DSpace са защитени с авторско право, с всички права запазени, освен ако не е указно друго.
Админ Инструменти