{"id":6085,"date":"2026-10-19T09:48:27","date_gmt":"2026-10-19T09:48:27","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-edlisfraedi-kevin-tanguy-elian-dini\/"},"modified":"2026-10-19T09:48:27","modified_gmt":"2026-10-19T09:48:27","slug":"doktorsvorn-i-edlisfraedi-kevin-tanguy-elian-dini","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-edlisfraedi-kevin-tanguy-elian-dini\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed e\u00f0lisfr\u00e6\u00f0i – Kevin Tanguy Elian Dini"},"content":{"rendered":"
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Doktorsefni:<\/strong>\u00a0Kevin Tanguy Elian Dini<\/p>\n

Heiti ritger\u00f0ar:<\/strong>\u00a0Lj\u00f3sfr\u00e6\u00f0ileg st\u00fdring lei\u00f0nieiginleika tv\u00edv\u00ed\u00f0ra Dirac kerfa<\/p>\n

Andm\u00e6lendur:<\/strong>
<\/strong>Dr. Polina Kuzhir, stj\u00f3rnandi vi\u00f0 NanoElectroMagnetics Laboratory, Belarusian State University.
Dr. Andre Xuereb, d\u00f3sent, University of Malta<\/p>\n

Lei\u00f0beinandi:<\/strong>\u00a0Ivan Shelykh, pr\u00f3fessor vi\u00f0 Raunv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n

Einnig \u00ed doktorsnefnd:<\/strong>
<\/strong>Dr. Hafli\u00f0i P\u00e9tur G\u00edslason, pr\u00f3fessor vi\u00f0 Raunv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands
Dr. Vi\u00f0ar Gu\u00f0mundsson, pr\u00f3fessor vi\u00f0 Raunv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands
Dr. Andrei Manolescu, pr\u00f3fessor vi\u00f0 H\u00e1sk\u00f3lann \u00ed Reykjavik<\/p>\n

Doktorsv\u00f6rn st\u00fdrir:<\/strong>\u00a0Dr. Oddur Ing\u00f3lfsson, pr\u00f3fessor og deildarforseti Raunv\u00edsindadeildar H\u00e1sk\u00f3la \u00cdslands<\/p>\n

\u00c1grip<\/strong><\/p>\n

V\u00edxlverkun milli lj\u00f3ss og efnis er umr\u00e6\u00f0uefni innan e\u00f0lisfr\u00e6\u00f0innar sem hefur st\u00e6kka\u00f0 \u00f6rt undanfarna \u00e1ratugi og or\u00f0i\u00f0 a\u00f0 einu mikilv\u00e6gasta ranns\u00f3knarsvi\u00f0i. Svi\u00f0i\u00f0 blandar saman \u00e1hrifum \u00far \u00fe\u00e9ttefnisfr\u00e6\u00f0i og skammtalj\u00f3sfr\u00e6\u00f0i og hefur s\u00edna einst\u00f6ku eiginleika. Me\u00f0 \u00fev\u00ed a\u00f0 sko\u00f0a hva\u00f0a eiginleika \u00feessara tveggja svi\u00f0a er best a\u00f0 setja saman, getur leitt til n\u00fdjunga og betri skilnings. \u00cd \u00feessari ritger\u00f0, ranns\u00f6kum vi\u00f0 fr\u00e6\u00f0ilega hva\u00f0a \u00e1hrif skauta\u00f0 rafsegulsvi\u00f0 hefur \u00e1 einum \u00feekktasta klasa tv\u00edvi\u00f0ra kerfa: Dirac efni. Til a\u00f0 n\u00e1 markmi\u00f0inu, sko\u00f0um vi\u00f0 fyrst \u00e1hrif svokalla\u00f0s kl\u00e6\u00f0ningarsvi\u00f0s \u00e1 einfaldasta efninu, einu lagi af graf\u00edni. S\u00ed\u00f0an er fari\u00f0 \u00ed fl\u00f3knari kerfi sem eru Dirac efni me\u00f0 orkugeil eins og hli\u00f0arm\u00e1lma-d\u00edkalk\u00f3gen\u00ed\u00f0ar (e. transition metal dichalcogenides) og graf\u00edn sem hefur vaxi\u00f0 \u00e1 undirlagi \u00far b\u00f3ron-n\u00edtri\u00f0i e\u00f0a rafeindir sem hafa massa \u00ed tveggja laga graf\u00edni. Loks sko\u00f0um vi\u00f0 a\u00f0fer\u00f0 til a\u00f0 st\u00fdra eiginleikum rafeinda me\u00f0 lj\u00f3si \u00ed graf\u00edni og a\u00f0 s\u00eda rafeindir \u00fear eftir dalav\u00edsi \u00feeirra. Til \u00feess a\u00f0 framkv\u00e6ma \u00feessa vinnu, er notast vi\u00f0 tv\u00f6 verkf\u00e6ri til a\u00f0 me\u00f0h\u00f6ndla kerfi sem eru lotubundin \u00ed t\u00edma. Eitt er Floquet-Magnus formalisminn og hitt er hermun rafeinda \u00ed Dirac kerfum me\u00f0 Gauss bylgjup\u00f3kkum.<\/p>\n

Um doktorsefni\u00f0<\/strong><\/p>\n

Kevin Dini er franskur r\u00edkisborgari sem hefur kl\u00e1ra\u00f0 fyrstu tv\u00f6 stig h\u00e1sk\u00f3lan\u00e1ms vi\u00f0 Blaise Pascal h\u00e1sk\u00f3lann \u00ed Clermont Ferrand, Frakklandi. Eftir a\u00f0 hafa l\u00e6rt \u00f6reindafr\u00e6\u00f0i fyrst um sinn, \u00e1kva\u00f0 hann a\u00f0 breyta um stefnu og l\u00e6ra \u00fe\u00e9ttefnisfr\u00e6\u00f0i.
<\/strong><\/p>\n

Vi\u00f0bur\u00f0ur \u00e1 Facebook<\/strong><\/a><\/p>\n

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