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[Fizinfo] M. Krisch szemináriuma: máj. 15., MTA Wigner FK

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  • From: VANKO Gyorgy <vanko.gyorgy AT>
  • To: Fizinfo AT
  • Subject: [Fizinfo] M. Krisch szemináriuma: máj. 15., MTA Wigner FK
  • Date: Mon, 5 May 2014 15:44:06 +0200 (CEST)

Kedves Kollégák!

2014. május 15-én 10 órakor Michael Krisch (a European Synchrotron Radiation Facility vezető kutatója, az ELI-ALPS tudományos tanácsának tagja) szemináriumot tart az MTA Wigner FK III. épületi tanácstemében

25 Years of Phonon Studies with X-Rays:
What did We Learn and Where do We Go?

címmel, amelyre minden érdeklődőt szeretettel várunk.

Az előadás összefoglalója a levél végén olvasható.

Üdvözlettel: Vankó György.
Gyorgy Vanko
Wigner Research Centre for Physics, Hung. Acad. Sci.
H-1525 Budapest, P.O.B. 49., Hungary
Phone: +36-1-392-22-22 /ext. 1736
Fax : +36-1-395-91-51

The study of phonon dispersion in condensed matter at momentum transfers, Q, and energies, E, characteristic of collective atom motions, provides insight into many physical properties such as elasticity, interatomic forces, structural phase stability and transitions, anharmonicity, and electron correlation. Techniques such as Brillouin and Raman light scattering, as well as infrared spectroscopy, are limited to momentum transfers close to zero and consequently probe the dynamics over macroscopic length scales. Access to the mesoscopic and microscopic region is primarily provided by inelastic neutron scattering (INS) or inelastic x-ray scattering (IXS).

The uniqueness of IXS is primarily due to two main aspects: i) there is no fundamental restriction on the energy-momentum transfer region to be explored, and ii) materials in very small quantities and at very high pressures can be studied. Since pioneering work in the late 1980s [1,2], IXS has evolved into a mature technique and has contributed to the advancement of knowledge in different scientific disciplines ranging from solid-state physics to planetary science [3-7]. The present contribution shall provide a representative overview of the main past achievements and project onto possible future avenues.

[1] E. Burkel, J. Peisl, and B. Dorner; Europhysics Lett. 3 (8), 957 (1987).
[2] B. Dorner, E. Burkel, Th. Illini, and J. Peisl; Z. Phys. B . Condensed Matter 69, 179 (1987).
[3] M. Krisch and F. Sette, in Light Scattering in Solids, Novel Materials and Techniques, Topics in Applied Physics 108, 317-369, Springer-Verlag Berlin Heidelberg (2007). Inelastic X-Ray Scattering from Phonons.
[4] V.M. Giordano, M. Krisch, and G. Monaco; J. Synchr. Radiation 16, 707
Phonon spectroscopy at high pressure by inelastic x-ray scattering.
[5] M. d.Astuto and M. Krisch; J. Phys. IV, 487 (2010)
High resolution inelastic X-ray scattering from thermal collective excitations
[6] A. Bosak, I. Fischer, and M. Krisch, in Thermodynamic Properties of Solids. Experiment and Modeling, Eds. S.L. Chaplot, R. Mittal, N. Choudhury. Wiley-VCH Verlag Weinheim, Germany (2010) 342 p. ISBN: 978-3-527-40812-2, Phonon spectroscopy of polycrystalline materials using inelastic x-ray scattering
[7] A. Bosak, and M. Krisch, in Modern Experimental Techniques, Eds. B. Murphy, O.H. Seeck. Pan Stanford Publishing, 300 p. ISBN: 978-9814303590 (2012), Inelastic x-ray scattering from phonons

  • [Fizinfo] M. Krisch szemináriuma: máj. 15., MTA Wigner FK, VANKO Gyorgy, 05/05/2014

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