<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="" style="font-family: HelveticaNeue;"><span class="">Dear Soft Matter Colleagues and Friends,</span></div><div class="" style="font-family: HelveticaNeue;"><span class=""><br class=""></span></div><div class="" style="font-family: HelveticaNeue;"><div class="">On Friday 17 March 2023 at 9:30 AM at the UW Faculty of Physics (Pasteura 5, Warsaw; room 1.40) we are hosting a seminar during which</div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><font face="HelveticaNeue" class=""><br class=""></font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class=""><b class="">Magdalena Birowska </b>(IFT UW)</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><font face="HelveticaNeue" class=""><br class=""></font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">will give a talk</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal; min-height: 14px;"><font face="HelveticaNeue" class=""><br class=""></font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class=""><b class=""><span style="font-family: "Helvetica Neue";" class="">Magnetic fingerprints in structural, electronic and optical studies of 2D magnetic crystals</span><span class="Apple-tab-span" style="white-space: pre;"> </span></b></font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><b class=""><br class=""></b></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><b class="">Abstract</b></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><div class="" style="margin: 0cm; background-color: white;"><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>In recent years, 2D magnetic materials gained a lot of interest due to their potential optoelectronics applications [1]. The current research focuses on the study of the transition metal phosphorous tri-chalcogenides semiconductors (MPX3, M=1st row transition metals, X=chalcogenides), which are antiferromagnetic compounds exhibiting various magnetic orderings. These materials are stable in air and we predict that the excitonic binding energies are giant for these compounds [2]. In fact, that these materials are 2D magnets, allowing one to both study and use magnetism and optics, and their interplay, in a single stable material. There is no precedence of such a platform in the realm of conventional materials. </div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>In this study, I will tackle a following scientific questions: what mechanism sustains the long-range AFM ordering, and whether the type of magnetic arrangement can be manipulated? In particular, I will present a comprehensive theoretical ab initio results of the electronic and optical properties of the series of MPX3 monolayers (M=Mn, Ni, Fe, Co, and X=S,Se), as well as the alloy systems with magnetic [3] and nonmagnetic substitution [4]. Finally, I highlight the importance of the structural anisotropy in this family of materials [5]. The aformentioned efficient engineering of the magnetism provides a suitable platform to understand the magnetism in thin samples. </div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue"; min-height: 15px;" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class=""><i class="">[1] M. Gibertini, M. Koperski, A. F. Morpurgo, K. S. Novosolev, Nat. Nanotech. 14, 408 (2019).<br class="">
[2] M. Birowska, P.E.F. Junior, J. Fabian, J, Kuntsmann, Phys. Rev. B 103, L121108 (2021). </i></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class=""><i class="">[3] C.Autieri, G. Cuono, C. Noce, M. Rybak, K. M. Kotur, C. E. Agrapidis, K. Wohlfeld, M. Birowska, J. Phys. Chem. C 126, 6791 (2022). </i></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue";" class=""><i class="">[4] R. Basnet, K. Kotur, M. Rybak, C. Stephenson, S. Bishop, C. Autieri, M. Birowska, J. Hu, Phys. Rev. Research 4, 023256 (2022).<br class="">
[5] A. K. Budniak, S. J. Zelewski, M. Birowska, T. Wozniak, T. Bendikov, Y. Kauffmann, Y. Amouyal, R. Kudrawiec, E. Lifshitz, Adv. Optical Mater. 2022, 2102489 </i></div><div style="margin: 0px; font-stretch: normal; line-height: normal; font-family: "Helvetica Neue"; min-height: 15px;" class=""><br class=""></div></div></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;">We warmly welcome everyone to attend the talk and the Soft Matter Coffee Break after the seminar, held in room 2.63 (2nd floor).</div><div class=""><br class=""></div></div><div class="" style="font-family: HelveticaNeue;"><br class=""></div><div class="" style="font-family: HelveticaNeue;"><div dir="auto" class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div class=""><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">Maria Ekiel-Jeżewska</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">Maciej Lisicki</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">Piotr Szymczak</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">Panagiotis Theodorakis</font></div><div class="" style="margin: 0px; font-stretch: normal; line-height: normal;"><font face="HelveticaNeue" class="">Marek Trippenbach</font></div></div></div></div><div class=""><div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><br class=""></div></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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