Naslov
Anisotropy and Dimensional Nature of Superconductivity in HgBa2CuO4+δ

Autori
Grbić, Mihael Srđan ; Požek, Miroslav ; Dulčić, Antonije ; Barišić, Neven ; Li, Yuan ; Zhao, Xudong ; Dressel, Martin ; Greven, Martin

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

Izvornik
Abstracts Book of the 9th International Conference on Materials and Mechanisms of Superconductivity (M2S-Tokyo 2009) / Akimitsu, Jun ; Fukuyama, Hide - Tokyo : ICS Convention Design, Inc., 2009, PS-A-7-PS-A-7

Skup
International Conference on Materials and Mechanisms of Superconductivity (9 ; 2009)

Mjesto i datum
Tokyo, Japan, 07.09.2009. - 12.09.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
superconductivity; cuprates; microwaves; anisotropy

Sažetak
Information about the anisotropy of the high-Tc cuprate systems reveals the dimensional properties of the order parameter, i.e. the nature of the superconducting (SC) state. Microwave absorption measurements have proved to be a useful tool for the determination of upper critical fields in high-Tc superconductors, even beyond the experimentally reachable dc magnetic fields. Also, from the phase sensitive complex frequency shift one can extract the ab- and c-axis complex conductivity, which is particularly sensitive if the proper sample geometry is chosen. Here we present the measurements of a high quality single crystal of HgBa2CuO4+δ, which can be considered as the model single-layered high-Tc superconductor, known for its unique property to confine extrinsic disorder away from the superconducting layer, and the determined upper critical fields in two orientations (Bdc || c-axis and Bdc || ab-plane). From the analisys of the in-plane and out-of-plane complex conductivity we determine the onset of the superconducting fluctuations and bring new results regarding the dimensionality of the SC state in the cuprates.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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