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Magnetic and Ionic Effects in High-temperature Superconductors


Nikšić, Goran; Sunko, Denis; Barišić, Slaven
Magnetic and Ionic Effects in High-temperature Superconductors // 7th International Conference Science and Engineering of Novel Superconductors
Montecatini Terme, Italija, 2014. (pozvano predavanje, nije recenziran, sažetak, znanstveni)


Naslov
Magnetic and Ionic Effects in High-temperature Superconductors

Autori
Nikšić, Goran ; Sunko, Denis ; Barišić, Slaven

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
7th International Conference Science and Engineering of Novel Superconductors

Mjesto i datum
Montecatini Terme, Italija, 15.-19.06.2014

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
High-temperature superconductors; magnetism; doping

Sažetak
Experimental magnetic responses of high-temperature superconductors are reviewed with particular regard to a minimal theoretical interpretation, compatible with the known data, which can account for the incommensurate response between T* and the superconducting Tc. Strong correlations dynamically redistribute the spectral weight of the effective low-energy fermions in the Brillouin zone so as to suppress incommensurabilities in the high-temperature particle-hole response of the doped metal in the relevant parameter space. Assuming additional order parameters below T* are of secondary importance, the magnetic pseudogap transition at T* is suggested to be a discommensuration of a high-energy dispersive mode of the copper spins in interaction with the predominantly oxygen nodal metal, with the appearance of a central peak. The physical origin of the effective interactions involved is described. Ionic (3D) effects on the metallic (2D) picture are qualitatively discussed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
119-1191458-0512 - Niskodimenzionalni jako korelirani vodljivi sustavi (Slaven Barišić, )

Ustanove
Prirodoslovno-matematički fakultet, Zagreb