Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi !

75As Nuclear Magnetic Resonance studies of superconducting LaO1-xFxFeAs (CROSBI ID 541038)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Grafe, Hans-Joachim ; Paar, Dalibor ; Lang, Guillaume ; Wolter, Anja ; Manthey, Katarina ; Hammerath, Franziska ; Curro, Nick J. ; Büchner, Bernd 75As Nuclear Magnetic Resonance studies of superconducting LaO1-xFxFeAs // 6th INTERNATIONAL CONFERENCE OF THE STRIPES SERIES, Quantum Phenomena in Complex Matter / Bianconi, A (ur.). Erice: SUPERSTRIPES-ONLUS and ETTORE MAJORANA FOUNDATION AND CENTRE FOR SCIENTIFIC CULTURE, 2008. str. 75-75

Podaci o odgovornosti

Grafe, Hans-Joachim ; Paar, Dalibor ; Lang, Guillaume ; Wolter, Anja ; Manthey, Katarina ; Hammerath, Franziska ; Curro, Nick J. ; Büchner, Bernd

engleski

75As Nuclear Magnetic Resonance studies of superconducting LaO1-xFxFeAs

We have performed 75As Nuclear Magnetic Resonance (NMR* and Nuclear Quadrupole Resonance (NQR* measurements on powders and aligned powders of the new LaO 1-x FxFeAs superconductor [1]. In the normal state, we find a strong doping dependence of the As NQR frequency that increases with increasing F doping, similar to the 17O quadrupole frequency in the high Tc cuprates, suggesting that the As quadrupole frequency is a measure of the charge carrier doping. From the As NMR experiments on aligned powders, we find a strong temperature dependence of the spin shift and Korringa behavior of the spin lattice relaxation rate. In the superconducting state, we find evidence for line nodes in the superconducting gap and spin-singlet pairing. Our measurements reveal a strong anisotropy of the spin lattice relaxation rate, which suggest that superconducting vortices contribute to the relaxation rate when the field is parallel to the c-axis but not for the perpendicular direction.

high temperature superconductivity; pseudogap; nuclear magnetic resonance and relaxation; oxypnictides

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o prilogu

75-75.

2008.

nije evidentirano

objavljeno

Podaci o matičnoj publikaciji

6th INTERNATIONAL CONFERENCE OF THE STRIPES SERIES, Quantum Phenomena in Complex Matter

Bianconi, A

Erice: SUPERSTRIPES-ONLUS and ETTORE MAJORANA FOUNDATION AND CENTRE FOR SCIENTIFIC CULTURE

Podaci o skupu

6th INTERNATIONAL CONFERENCE OF THE STRIPES SERIES, Quantum Phenomena in Complex Matter

predavanje

26.07.2008-01.08.2008

Erice, Italija

Povezanost rada

Fizika