{"id":11801,"date":"2021-01-21T10:18:14","date_gmt":"2021-01-21T09:18:14","guid":{"rendered":"http:\/\/physics.uwb.edu.pl\/wf\/?page_id=11801"},"modified":"2021-01-21T10:19:15","modified_gmt":"2021-01-21T09:19:15","slug":"o-marianie-smoluchowskim-w-setna-rocznice-smierci-2-2-2-2-2-4-3-2-2-2-2-2-2-2-3-3-2-3-2-2-2-2-3-2-2-2-2-2-2-3-2-2-2-2-2-2-2-2-2-3-3-2-2-2-3-3-2-2-2-2-2-3-2-3-2-2-2-2-2-2-2-3-3-3-2-2-2-2-3","status":"publish","type":"page","link":"https:\/\/physics.uwb.edu.pl\/wf\/?page_id=11801","title":{"rendered":"Hot electrons in metals for ultrafast magneto-photonics"},"content":{"rendered":"

Seminarium wydzia\u0142owe (online<\/a>)
\n<\/strong><\/h3>\n

Dnia 2021-01-26 o godzinie 13:15 odb\u0119dzie si\u0119 seminarium “on-line” (seminarium online odb\u0119dzie si\u0119 z wykorzystaniem platformy ZOOM<\/a>):<\/p>\n

“Hot electrons in metals for ultrafast magneto-photonics”<\/strong><\/span><\/h3>\n

Serdecznie zapraszamy<\/p>\n

Andrzej Maziewski<\/p>\n

Jerzy Przeszowski<\/p>\n

 <\/p>\n

Hot electrons in metals for ultrafast magneto-photonics<\/strong><\/span><\/p>\n

In this talk I will discuss local and non-local dynamics of the laser-excited electron population in metals on a sub-picosecond timescale. There, “hot” non-thermal electrons (those not obeying the Fermi-Dirac distribution) play a crucial role in a plethora of effects including laser-induced demagnetization and long-distance spin transport. Recent experimental results [1,2] indicate the possibility of ballistic spin transfer over 100 nm in Au detected by all-optical time-resolved methods. I will discuss a few main misconceptions about the non-thermal electron population and ultrafast magnetism and highlight the applications of this laser-induced spin transfer for ultrafast magnetism and magneto-photonics. One particularly prominent example of the spin-polarized hot electron transport is the spin-transfer torque (STT)-mediated excitation of high-k (up to 1 nm^-1<\/sup>) spin waves in a orthogonally magnetized ferromagnetic Fe film [3]. The spatial properties of this spin current-driven STT excitation can be inferred from the spectral analysis of these high-frequency spin waves, indicating the STT spatial confinement to less than 2 nm at the Au\/Fe interface.<\/p>\n

[1] A. Alekhin, I. Razdolski et al., Phys. Rev. Lett. 119, 017202 (2017)
\n[2] A. Alekhin, I. Razdolski et al. J. Phys.: Condens. Matter 31, 124002 (2019)
\n[3] I. Razdolski et al., Nat. Comm. 8, 15007 (2017)<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Seminarium wydzia\u0142owe (online) Dnia 2021-01-26 o godzinie 13:15 odb\u0119dzie si\u0119 seminarium “on-line” (seminarium online odb\u0119dzie si\u0119 z wykorzystaniem platformy ZOOM): “Hot electrons in metals for ultrafast magneto-photonics” Serdecznie zapraszamy Andrzej […]<\/a><\/p>\n","protected":false},"author":14,"featured_media":8413,"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-11801","page","type-page","status-publish","has-post-thumbnail","category-seminarium_pl"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P7nvcn-34l","_links":{"self":[{"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=\/wp\/v2\/pages\/11801","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=11801"}],"version-history":[{"count":4,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=\/wp\/v2\/pages\/11801\/revisions"}],"predecessor-version":[{"id":11806,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=\/wp\/v2\/pages\/11801\/revisions\/11806"}],"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\/8413"}],"wp:attachment":[{"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/physics.uwb.edu.pl\/wf\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}