IJS KOLOKVIJ, sreda, 25.1.2012, prof. dr. Viktor Kabanov

[Barbara Hrovatin]

Vabimo vas na 10. predavanje iz sklopa "Kolokviji na IJS" v letu 2011/12, ki
bo v sredo, 25. januarja, 2012, ob 13. 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. 

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



prof. dr. Viktor Kabanov

Institut Jožef Stefan, Odsek za kompleksne snovi

 

Superprevodnost: Sklopitev med elektroni in fononi ter nekonvencionalno
parjenje z odbojno interakcijo

Iskanje boljših superprevodnikov z višjo temperaturo prehoda, ki prenesejo
močnejša magnetna polja in večje kritične tokove, je eden glavnih izzivov
fizike kondenzirane snovi. V Bardeen-Cooper-Schriefferjevi teoriji
superprevodnosti pride do tvorbe Cooperjevih parov zaradi interakcije, ki jo
posredujejo nihanja kristalne mreže (torej fononi). V predavanju bomo
obravnavali različne eksperimentalne metode, ki omogočajo ovrednotenje
jakosti sklopitve med elektroni in fononi. Posvetili se bomo tudi
teoretičnim omejitvam nekonvencionalne superprevodnosti, kakršno da odbojna
interakcija med elektroni. 

Predavanje bo v angleščini.

Lepo vabljeni!

*****

 

We would like to invite you to 10th lecture of the "Kolokvij na IJS" in the
school year 2011/12. The lecture will be held on Wednesday, January 25,
2012, at 1 pm at the 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. 

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



 

prof. dr. Viktor Kabanov

Jožef Stefan Institute, Department of Complex Matter

 

Superconductivity: Electron-phonon Coupling and Unconventional Pairing with
Repulsive Interaction

 

The quest for better superconductors, with higher transition temperatures
that perform at higher magnetic fields and lead to higher critical currents
is one of the major challenges in condensed matter physics. In the
Bardeen-Cooper-Schrieffer theory of superconductivity, electrons form Cooper
pairs as a result of an interaction mediated by vibrations in the underlying
crystal structure (phonons). In my talk I will review  different
experimental techniques which allow an evaluation of the strength of the
interaction between electrons and phonons. The theoretical constraints for
an unconventional superconductivity caused by repulsive interaction will be
also discussed.

 

 

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

 

 

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