[seminar] Seminar FO, Williams (02.09.2008.)

[hbuljan at phy.hr]

Poštovani kolege,

   prije ljetne stanke želio bih najaviti predavanje koje
će se održati na samom početku rujna, točnije 02.09.
na Fizičkom odsjeku. Naslov predavanja jest
"Cu Nuclear Magnetic Resonance Intensity Reduction
in Electron-Doped Superconducting Cuprates" a održati će ga
G.V.M. Williams s Novog Zelanda, koji će biti gost
Prof. M. Požeka.
Sažetak predavanja nalazi se u nastavku poruke.

Želim vam dobar odmor preko ljeta,
Hrvoje Buljan

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SEMINAR FIZIČKOG ODSJEKA
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Vrijeme:   utorak, 02. 09. 2008., 14:15 sati (točno)
Mjesto:    Fizički odsjek, Bijenička c. 32, predavaonica F08

Cu Nuclear Magnetic Resonance Intensity Reduction
in Electron-Doped Superconducting Cuprates

       Dr. Grant V. M. Williams

  MacDiarmid Institute, Industrial Research,
   P.O. Box 31310, Lower Hutt, New Zealand

A temperature-dependent nuclear magnetic resonance (NMR) intensity
reduction or “wipe-out” is best known in the hole-doped high temperature
superconducting cuprates (HTSCs) [1,2]. It has been attributed to a
slowing down of the spin and charge fluctuations. We have recently shown
that a temperature-dependent reduction in the Cu NMR intensity is also
observed in the electron-doped HTSCs, Pr2-xCexCuO4 and Sr0.9La0.1CuO2 for
less than 0.13 doped electrons per Cu [3,4]. In this talk we report the
results from recent measurements on the pure compounds as well as Ni-doped
samples.

[1] A. W. Hunt, P. M. Singer, K. R. Thurber, and T. Imai, Phys. Rev. Lett.
82, 4300 (1999).
[2] N. J. Curro, P. C. Hammel, B. J. Suh, M. Hücker, B. Büchner, U.
Ammerahl, and A. Revcolevschi, Phys. Rev. Lett. 85, 642 (2000).
[3] G. V. M. Williams, J. Haase, Min-Seok Park, Kyung Hee Kim, and Sung-Ik
Lee, Phys. Rev. B 72, 212511 (2005).
[4] G. V. M. Williams and J. Haase, Phys. Rev. B 75, 172506 (2007).

					Voditelj seminara FO
					Hrvoje Buljan, hbuljan at phy.hr
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