Role of electronic correlations in the Fermi surface formation of NaxCoO2

A. Shorikov, M. M. Korshunov, V. I. Anisimov

Результат исследований: Вклад в журналСтатьярецензирование

7 Цитирования (Scopus)


Band structure of metallic sodium cobaltate NaxCoO2 (x = 0.33, 0.8, 0.61, 0.72) has been investigated by local density approximation + Hubbard U (LDA+U) method and within Gutzwiller approximation for the Co-t2g manifold. Correlation effects being taken into account results in suppression of the e′g hole pockets at the Fermi surface in agreement with recent angle-resolved photoemission spectroscopy (ARPES) experiments. In the Gutzwiller approximation the bilayer splitting is significantly reduced due to the correlation effects. The formation of high spin (HS) state in Co d-shell was shown to be very improbable.

Язык оригиналаАнглийский
Страницы (с-по)80-85
Число страниц6
ЖурналJETP Letters
Номер выпуска2
СостояниеОпубликовано - мар. 2011
Опубликовано для внешнего пользованияДа


Подробные сведения о темах исследования «Role of electronic correlations in the Fermi surface formation of NaxCoO2». Вместе они формируют уникальный семантический отпечаток (fingerprint).