{"id":10440,"date":"2019-11-15T14:26:30","date_gmt":"2019-11-15T13:26:30","guid":{"rendered":"http:\/\/physics.uwb.edu.pl\/wf\/?page_id=10440"},"modified":"2019-11-15T14:27:05","modified_gmt":"2019-11-15T13:27:05","slug":"o-marianie-smoluchowskim-w-setna-rocznice-smierci-2-2-2-2-2-4-3-2-2-2-2-2-2-2-3-3-2-3-2-2-2-2-3-2-2-2-2-2-2-3-2-2-2-2-2-2-2-2-2-3-3-2-2-2-3-3-2-2-2-2-2-2","status":"publish","type":"page","link":"https:\/\/physics.uwb.edu.pl\/wf\/?page_id=10440","title":{"rendered":"Localization properties of spin waves in planar magnonic crystals and quasicrystals"},"content":{"rendered":"

Seminarium wydzia\u0142owe
\n<\/strong><\/h3>\n

Dnia 2019-11-19 o godzinie 14:15 w sali 2011 Wydzia\u0142u Fizyki UwB odb\u0119dzie si\u0119 wyk\u0142ad, na kt\u00f3rym dr Justyna Rych\u0142y z Instytutu Fizyki Molekularnej PAN w Poznaniu<\/strong>wyg\u0142osi wyk\u0142ad pt:<\/p>\n

“Localization properties of spin waves in planar magnonic crystals and quasicrystals”<\/span><\/h3>\n

Serdecznie zapraszamy<\/p>\n

Andrzej Maziewski<\/p>\n

 <\/p>\n

Localization properties of spin waves in planar magnonic crystals and quasicrystals.<\/em>
\nJustyna Rych\u0142y<\/strong>
\nInstitute of Molecular Physics, Polish Academy of Sciences, Pozna\u0144, Poland<\/p>\n

This seminar would be devoted to the localization of spin waves in magnonic crystals and quasicrystals, and SW dynamics in a single nanowire being the building block of these structures [1].
\nQuasicrystals are structures that exhibit long-range order, lack translational periodicity, but possess another noteworthy symmetry property, which is self-similarity by scaling [2]. Therefore, magnonic quasicrystals surpass regular magnonic crystals [3] regarding provided by them possibilities of spin waves control: they offer complex, self-similar spin wave spectra, localization of spin waves inside the structure, and on the surfaces of the structure [4,5].
\nThe results of joint collaborative research with the experimental groups will be shown, demonstrating the possibility of spin wave propagation through magnonic quasicrystal, the opening of additional mini-bandgaps [6], and the reprogrammability of the resonance frequencies, dependent on the magnetization order in magnonic quasicrystals [7]. The measurements of SWs propagating in a 1D Fibonacci sequence of dipolarly coupled permalloy nanowires are done with the help of a combined X-ray microscopic and Brillouin Light Scattering. The experimental results are interpreted using numerical calculations. Additionally, a simple model estimating frequencies of magnonic gaps in the spin wave spectra of the Fibonacci quasiperiodic structure matches the frequency mini-band gaps calculated numerically and measured experimentally. The demonstrated features of one-dimensional magnonic quasicrystals allow utilizing this class of metamaterials for magnonics and make them an ideal basis for future applications.<\/p>\n

[1] J. Rych\u0142y, V. S Tkachenko, J. W. K\u0142os, A. Kuchko, M. Krawczyk, Spin wave modes in a cylindrical nanowire in crossover dipolar-exchange regime, Journal of Physics D: Applied Physics, 52 075003 (2019)<\/a>
\n[2] C. Janot, Quasicrystals: A Primer 2nd edition, Oxford University Press, 2012<\/a>
\n[3] Justyna Rych\u0142y, Jaros\u0142aw W. K\u0142os, Spin wave surface states in 1D planar magnonic crystals, Journal of Physics D: Applied Physics, 50, 164004, (2017)<\/a>
\n[4] J. Rych\u0142y, J. W. K\u0142os, M. Mruczkiewicz, M. Krawczyk, Spin waves in one-dimensional bicomponent magnonic quasicrystals, Physical Review B 92, 054414 (2015)<\/a>
\n[5] J. Rych\u0142y, J. W. K\u0142os, and M. Krawczyk, Spin wave damping in periodic and quasiperiodic magnonic structures, Journal of Physics D: Applied Physics, 49, 175001 (2016)<\/a>
\n[6] Filip Lisiecki, Justyna Rych\u0142y, Piotr Ku\u015bwik, Hubert G\u0142owi\u0144ski, Jaros\u0142aw W. K\u0142os, Felix Gro\u00df, Nick Tr\u00e4ger, Iuliia Bykova, Markus Weigand, Mateusz Zelent, Eberhard J. Goering, Gisela Sch\u00fctz, Maciej Krawczyk, Feliks Stobiecki, Janusz Dubowik, and Joachim Gr\u00e4fe, Magnons in a Quasicrystal: Propagation, Extinction, and Localization of Spin Waves in Fibonacci Structures, Phys. Rev. Applied 11, 054061 (2019)<\/a>
\n[7] F. Lisiecki, J. Rych\u0142y, P. Ku\u015bwik, H. G\u0142owi\u0144ski, J. W. K\u0142os, F. Gro\u00df, I. Bykova, M. Weigand, M. Zelent, G. Sch\u00fctz, G. Gubbiotti, M. Krawczyk, F. Stobiecki, J. Dubowik, and J. Gr\u00e4fe, Reprogrammability and scalability of Fibonacci magnonic quasicrystal, Physical Review Applied 11, 054003 (2019)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Seminarium wydzia\u0142owe Dnia 2019-11-19 o godzinie 14:15 w sali 2011 Wydzia\u0142u Fizyki UwB odb\u0119dzie si\u0119 wyk\u0142ad, na kt\u00f3rym dr Justyna Rych\u0142y z Instytutu Fizyki Molekularnej PAN w Poznaniuwyg\u0142osi wyk\u0142ad pt: […]<\/a><\/p>\n","protected":false},"author":14,"featured_media":3366,"parent":822,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"Layout":"1c","footnotes":""},"categories":[69],"tags":[],"class_list":["entry","author-ulag","post-10440","page","type-page","status-publish","has-post-thumbnail","category-seminarium_pl"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P7nvcn-2Io","_links":{"self":[{"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=\/wp\/v2\/pages\/10440","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10440"}],"version-history":[{"count":2,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=\/wp\/v2\/pages\/10440\/revisions"}],"predecessor-version":[{"id":10442,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=\/wp\/v2\/pages\/10440\/revisions\/10442"}],"up":[{"embeddable":true,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=\/wp\/v2\/pages\/822"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=\/wp\/v2\/media\/3366"}],"wp:attachment":[{"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10440"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}