Naslov
Multiband Responses in High-Tc Cuprate Superconductors

Autori
Nikšić, Goran ; Kupčić, Ivan ; Barišić, Osor Slaven ; Sunko, Denis K. ; Barišić, Slaven

Izvornik
Journal of superconductivity and novel magnetism (1557-1939) 27 (2014), 4; 969-975

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Emery model ; magnetic fluctuations ; electron-doped superconductors

Sažetak
We report on the interplay of localized and extended degrees of freedom in the metallic state of hightemperature superconductors in a multiband setting. Various ways in which the bare magnetic response may become incommensurate are measured against both phenomenological and theoretical requirements. In particular, the pseudogap temperature is typically much higher than the incommensurability temperature. When microscopic strong-coupling effects with real-time dynamics between copper and oxygen sites are included, they tend to restore commensurability. Quantum transport equations for low-dimensional multiband electronic systems are used to explain the linear doping dependence of the dc conductivity and the doping and temperature dependence of the Hall number in the underdoped LSCO compounds. Coulomb effects of dopands are inferred from the doping evolution of the Hartree–Fock model parameters.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Rad je kao pozvano predavanje prezentiran na skupu Quantum in Complex Matter: Superconductivity, Magnetism and Ferroelectricity, održanom od 27.5-1.6.2013.g., Ischia, Italija.

POVEZANOST RADA