- Tytuł:
- Hole-Doped Cuprate Panorama and the Second Neighbor Hopping
- Autorzy:
- Goswami, P.
- Powiązania:
- https://bibliotekanauki.pl/articles/1399515.pdf
- Data publikacji:
- 2013-07
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
74.72.Gh
74.20.-z - Opis:
- We consider the coexistent id-density wave order, at the antiferromagnetic wave vector Q =(π,π), representing the pseudo-gap state, and d-wave superconductivity, driven by an assumed attractive interaction, within the BCS framework for the two-dimensional fermion system on a square lattice starting with a mean-field Hamiltonian involving the singlet id-density wave and the d-wave superconductivity pairings. The second-neighbor hopping, which is known to be important for cuprates and frustrates the kinetic energy of electrons, leads to the Fermi surface sheets being not connected by Q. The signature of the particle-hole asymmetry in the single-particle excitation spectrum of the pure id-density wave state is reflected in the coexisting id-density wave and d-wave superconductivity states, though the latter is characterized by the Bogoliubov quasi-particle bands - a characteristic feature of superconducting state. Quite significantly, we find that the coexistence is possible due to the non-nesting property.
- Źródło:
-
Acta Physica Polonica A; 2013, 124, 1; 90-93
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł