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, 15.06.2014. - 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

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