IJS KOLOKVIJ, sreda, 11. marec 2009, dr. Mark Johnson

[Andreja Berglez]

Vabim vas na 8. predavanje iz sklopa "Kolokviji na IJS" v letu 2008/09, ki
bo v sredo, 11. marca 2009, ob 13:00 uri v Veliki predavalnici Instituta
>Jožef Stefan< na Jamovi cesti 39 v Ljubljani. Napovednik predavanja najdete
tudi na naslovu http://www.ijs.si/ijsw/Koledar_prireditev, posnetke
preteklih predavanj pa na http://videolectures.net/kolokviji_ijs. 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



dr. Mark JOHNSON 

Computing for Science, ILL

 

Študij mrežne dinamike z neelastičnim sipanjem nevtronov in numeričnim
modeliranjem

 

Raziskovanje mrežne dinamike s sipanjem nevtronov ima predvsem na področju
določevanja medatomskih vezi že dolgo in uspešno zgodovino. V zadnjem času
se je močna sinergija med eksperimentalnim delom in simulacijami še
okrepila, saj se ab initio računske metode uporabljajo za analizo
neelastičnih sipanj v kompleksnih sistemih. Poleg tega pa nam ab initio
metode omogočajo vpogled v elektronske in magnetne strukture, ki jih lahko
direktno opazujemo s sipanjem nevtronov.

 

V predavanju se bomo torej posvetili primerom, kjer so nevtroni v
kombinaciji z numeričnimi metodami dali jasen vpogled v strukturne vzbuditve
v DNA, gorivnih celicah,  termoelektričnih sistemih ter magnetnih materialih
(vključno z železo-pniktidnimi superprevodniki).

Predavanje bo v angleščini.

Lepo vabljeni!

***

 

We would like to invite you to 8th lecture of the "Kolokvij na IJS" in the
school year 2008/09. The lecture will be held on Wednesday, March 11, 2009,
at 1 pm at JSI main lecture hall, Jamova 39, Ljubljana. The abstract of the
lecture can be found on website:
<http://www.ijs.si/ijsw/Koledar_prireditev>
http://www.ijs.si/ijsw/Koledar_prireditev, the previous recorded lectures
can be found on website:  <http://videolectures.net/kolokviji_ijs>
http://videolectures.net/kolokviji_ijs. 

********************************************



dr. Mark JOHNSON 

Computing for Science, ILL

 

Lattice dynamics studied by inelastic neutron scattering and numerical
modelling

 

Neutron scattering and lattice dynamics have a long history, in particular
with experimental data being used to refine inter-atomic force constants.
Nowadays there is still a strong synergy between experiment and simulation,
with the difference that ab initio computational methods are often now used
to analyse inelastic scattering data from complex systems. In addition, ab
initio methods give access to electronic and magnetic structure, the latter
being directly probed by neutron scattering techniques.

 

I will therefore show a range of examples of how neutrons and numerical
methods are giving clear insights into the role of structural excitations in
DNA, solid oxide fuel cells, thermoelectric materials and magnetic
materials, including iron-pnictide superconductors.

 

We look forward to meeting you at the "Kolokvij na IJS"!

 

 

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