<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><div><br></div><div><br></div><div><table border="1" cellspacing="0" cellpadding="0" style="width: 680px;" data-mce-style="width: 680px;"><tbody><tr><td width="605" valign="top" style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;" data-mce-style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;"><p style="margin: 0px; text-align: center;"><span lang="EN-GB" style="font-family: 'Century Gothic','sans-serif';" data-mce-style="font-family: 'Century Gothic','sans-serif';"> </span><img src="cid:1e33393b5422be108f36ce50364186f099427ef6@zimbra" data-mce-src="cid:1e33393b5422be108f36ce50364186f099427ef6@zimbra" style="text-align: center; font-size: 12pt;"></p><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b><span lang="EN-GB" style="font-family: 'Century Gothic','sans-serif'; color: #5f5f5f;" data-mce-style="font-family: 'Century Gothic','sans-serif'; color: #5f5f5f;"> </span></b></p><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b><span lang="EN-GB" style="font-family: 'Century Gothic','sans-serif'; color: #5f5f5f;" data-mce-style="font-family: 'Century Gothic','sans-serif'; color: #5f5f5f;">Institut za fiziku, Bijenička cesta 46,</span></b></p><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b><span lang="EN-GB" style="font-family: 'Century Gothic','sans-serif'; color: #5f5f5f;" data-mce-style="font-family: 'Century Gothic','sans-serif'; color: #5f5f5f;">predavaonica u zgradi Mladen Paić</span></b></p><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b><span lang="EN-GB" style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif'; color: #993300;" data-mce-style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif'; color: #993300;">četvrtak, 17. srpnja 2014., u 11:00 sati</span></b><span lang="EN-GB" style="font-family: 'Century Gothic','sans-serif';" data-mce-style="font-family: 'Century Gothic','sans-serif';"></span></p></td></tr><tr><td width="605" valign="top" style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;" data-mce-style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;"><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b><span lang="EN-GB" style="font-size: 16.0pt; color: #55913c;" data-mce-style="font-size: 16.0pt; color: #55913c;">Tranzijentna dinamika optički pobuđenih elektrona u k-prostoru; sistemi reducirane dimenzionalnosti</span></b><b><span lang="EN-GB" style="font-size: 16.0pt; font-family: 'Century Gothic','sans-serif'; color: #559132;" data-mce-style="font-size: 16.0pt; font-family: 'Century Gothic','sans-serif'; color: #559132;"></span></b></p></td></tr><tr><td width="605" valign="top" style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;" data-mce-style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;"><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b><span lang="EN-GB" style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';"><br></span></b></p><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b><span lang="EN-GB" style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';">Dr. </span></b><b><span lang="EN-GB" style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';">Vesna Mikšić Trontl</span></b><b><span lang="EN-GB" style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';"> </span></b><b><span lang="EN-GB" style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';"></span></b></p><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b><span lang="EN-GB" style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 14.0pt; font-family: 'Century Gothic','sans-serif';"><br></span></b></p></td></tr><tr><td width="605" valign="top" style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;" data-mce-style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;"><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b><span lang="EN-US" style="font-family: 'Century Gothic','sans-serif';" data-mce-style="font-family: 'Century Gothic','sans-serif';"> </span></b></p><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b style="font-size: 12pt;"><span lang="EN-GB" style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';">University Duisburg-Essen, Faculty of Physics, Lotharstr. 1, 47048 Duisburg, Germany</span></b></p><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b><i><span lang="EN-GB" style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';">E-mail: <span style="color: blue;" data-mce-style="color: blue;"><a href="mailto:vesna.miksic-trontl@uni-due.de">vesna.miksic-trontl@uni-due.de</a><span class="object"><span style="text-decoration: underline;" data-mce-style="text-decoration: underline;"> </span></span></span></span></i></b><span lang="EN-GB" style="font-family: 'Century Gothic','sans-serif';" data-mce-style="font-family: 'Century Gothic','sans-serif';"></span></p><p align="center" style="margin: 0px; text-align: center;" data-mce-style="margin: 0px; text-align: center;"><b><i><span lang="EN-GB" style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';"><span style="color: blue;" data-mce-style="color: blue;"><br></span></span></i></b></p></td></tr><tr><td width="605" valign="top" style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;" data-mce-style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;"><p style="text-align: justify; margin: 0px;" data-mce-style="text-align: justify; margin: 0px;"><b><span lang="EN-GB" style="font-size: 12.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 12.0pt; font-family: 'Century Gothic','sans-serif';"> Sistemi reducirane dimenzionalnosti pružaju podlogu za istraživanje različitih “egzotičnih” svojstava koja ne postoje u volumenu istog materijala. Primjerice, zatočenje (confinement) valne funkcije u 1D ili 2D, ne samo da može uvesti efekt kvantne veličine (quantum size effect), nego može dovesti i do mnogočestičnih fenomena u kojima elektronske korelacije i vezanje elektrona s drugim pobuđenjima postaje izuzetno važno što također može inducirati nastanak osnovnog stanja slomljene simetrije poput valova gustoće naboja ili supravodljive faze. Većina dosadašnjeg saznanja o elektronskim vrpcama temelji se na istraživanjima kutno-razlučivom fotoelektronskom spektroskopijom (ARPES). Kako bi se stekla potpunija slika potrebno je poznavanje nepopunjenog djela elektronskih vrpci kao i dinamike pobuđenih elektrona u tim vrpcama. Femtosekundne vremenski-razlučive spektroskopije omogućuju razlučivanje doprinosa elektron-elektron i elektron-fonon međudjelovanja vremenu relaksacije elektrona u pobuđenom stanju. Proširenje klasičnog ARPESa na vremensku domenu u femtosekundnim pump-probe eksperimentima omoguća direktno praćenje dinamike elektrona u ovisnosti o energiji u k-prostoru (u inicijalno nepopunjenom dijelu elektronskih vrpci). Ovome treba dodati i mogućnost istraživanja fenomena induciranih femtosekundnim laserskim pulsom velikog intenziteta koji dovodi sistem daleko izvan ravnotežnog stanja (npr. stvaranje koherentnih fonona, nestanak CDW faze itd.).</span></b></p><p style="text-align: justify; margin: 0px;" data-mce-style="text-align: justify; margin: 0px;"><b><span lang="EN-GB" style="font-size: 12.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 12.0pt; font-family: 'Century Gothic','sans-serif';"> U seminaru ću ukratko predstaviti dvije vremenski razlučive tehnike: femtosekundni vremenski-razlučiv ARPES, te kutno i vremenski-razlučivu dvo-fotonsku fotoemisiju (2PPE) i izložiti neke od inicijalnih rezultata istraživanja nisko-dimenzionalnog Pb/Si sistema. </span></b></p><p style="text-align: justify; margin: 0px;" data-mce-style="text-align: justify; margin: 0px;"><b><span lang="EN-GB" style="font-size: 12.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 12.0pt; font-family: 'Century Gothic','sans-serif';"> Na kraju bih dala kratak pregled osnovnih pravaca istraživanja koji se koriste tehnikom vremenski razlučive 2PPE i vremenski razlučivog ARPESa, te s obzirom na to osvrnula se na moguće buduće pravce istraživanja.</span></b></p><p style="margin: 0px; text-align: justify;" data-mce-style="margin: 0px; text-align: justify;"><b><span lang="EN-GB" style="font-family: 'Century Gothic','sans-serif';" data-mce-style="font-family: 'Century Gothic','sans-serif';"> Dio seminara će biti posvećen i sažetom pregledu prijašnjeg rada koji pokriva tematiku stanja kvantne jame (QWS) u kvazi-2D sistemima i grafen.<i><span style="color: blue;" data-mce-style="color: blue;"></span></i></span></b></p></td></tr><tr><td width="605" valign="top" style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;" data-mce-style="width: 453.75pt; padding: 5.25pt 5.25pt 5.25pt 5.25pt;"><p style="margin: 0px;" data-mce-style="margin: 0px;"><b><span lang="EN-GB" style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';"> </span></b></p><p style="margin: 0px;" data-mce-style="margin: 0px;"><b><span lang="EN-GB" style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';">Voditelji seminara IF-a: Nikša Krstulović i Osor Bari</span></b><b><span style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 11.0pt; font-family: 'Century Gothic','sans-serif';">šić</span></b><b><span style="font-size: 10.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 10.0pt; font-family: 'Century Gothic','sans-serif';"></span></b></p><p style="margin: 0px;" data-mce-style="margin: 0px;"><b><span style="font-size: 10.0pt; font-family: 'Century Gothic','sans-serif';" data-mce-style="font-size: 10.0pt; font-family: 'Century Gothic','sans-serif';"> </span></b></p></td></tr></tbody></table></div><div><span name="x"><br></span></div><div><span name="x"></span>*************************<br>Nikša Krstulović, PhD<br>Research associate<br><div><br></div>Institute of Physics<br>Bijenicka 46<br>HR-10000 Zagreb, Croatia<br><div><br></div>Phone: 00385 1 4698 872<br> 00385 1 4698 851<br>Fax: 00385 1 4698 889<br><div><br></div>http://www.ifs.hr/<br>http://spectra.ifs.hr/<br>**************************<br><div><br></div><span name="x"></span></div></div></body></html>