[seminar] Seminar FO, Williams

[hbuljan at phy.hr]

Poštovani kolege,

podsjećam na današnje predavanje Dr. G.V.M. Williamsa,
"Cu Nuclear Magnetic Resonance Intensity Reduction
in Electron-Doped Superconducting Cuprates".

Srdačan pozdrav,
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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