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Nuclear Magnetic Resonance evidence for correlations between antiferromagnetism and pseudogap effects in Zn- and Ni-doped (Eu, Nd)Ba2Cu3O6+y single crystals (CROSBI ID 541037)

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

Grafe, Hans-Joachim ; Hammerath, Franziska ; Paar, Dalibor ; Urbanik, G. ; Kataev, V. ; Wolf, Th. ; Khaliullin, G. ; Büchner, B. Nuclear Magnetic Resonance evidence for correlations between antiferromagnetism and pseudogap effects in Zn- and Ni-doped (Eu, Nd)Ba2Cu3O6+y single crystals // 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. 19-19

Podaci o odgovornosti

Grafe, Hans-Joachim ; Hammerath, Franziska ; Paar, Dalibor ; Urbanik, G. ; Kataev, V. ; Wolf, Th. ; Khaliullin, G. ; Büchner, B.

engleski

Nuclear Magnetic Resonance evidence for correlations between antiferromagnetism and pseudogap effects in Zn- and Ni-doped (Eu, Nd)Ba2Cu3O6+y single crystals

We present 63, 65Cu Nuclear Quadrupole Resonance (NQR) and 17O Nulcear Magnetic Resonance (NMR) measurements on (Eu, Nd)Ba2(Cu, Ni, Zn)3O6+y single crystals heavily doped with magnetic (Ni) and non-magnetic (Zn) impurities. Owing to the impurity doping only traces of superconductivity are found at low temperatures for both, Ni and Zn doping. Nevertheless, the effect of Ni on the magnetic correlations is completely different from that of the non-magnetic Zn doping. The Ni enhances magnetic correlations and induces a wipeout of both, the copper NQR and oxygen NMR signal comparable to that found in stripe ordered lanthanum cuprates. In contrast, the magnetism is suppressed in the Zn doped samples where no wipeout effect is observed and the nuclear spin lattice relaxation rate of the Cu shows a pseudogap like decrease at low temperatures. Our findings are in a striking correspondence with the different impact of Ni and Zn impurities on the charge pseudogap evidenced by recent optical data, uncovering thereby a close relationship between the magnetic correlations and pseudogap phenomena.

high temperature superconductivity; impurity doping; pseudogap; NMR; NQR

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o prilogu

19-19.

2008.

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