C. In, Sangwan Sim, Sungjoon Park, Hyemin Bae, N. Koirala, J. Moon, M. Salehi, Seongshik Oh, Dohun Kim, Hyunyong Choi
{"title":"Terahertz investigation of Dirac plasmons and phonon interaction in the topological insulator Bi2Se3 metamaterials","authors":"C. In, Sangwan Sim, Sungjoon Park, Hyemin Bae, N. Koirala, J. Moon, M. Salehi, Seongshik Oh, Dohun Kim, Hyunyong Choi","doi":"10.1364/CLEO_QELS.2017.FF1F.2","DOIUrl":null,"url":null,"abstract":"We have measured the terahertz responses of plasmon-phonon interaction in the topological insulator Bi<inf>2</inf>Se<inf>3</inf> metamaterials. Upon photoexcitation, we observed transient phonon stiffening of ∼0.1 THz when the plasmon frequency is above the phonon energy.","PeriodicalId":6652,"journal":{"name":"2017 Conference on Lasers and Electro-Optics (CLEO)","volume":"127 1","pages":"1-2"},"PeriodicalIF":0.0000,"publicationDate":"2017-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 Conference on Lasers and Electro-Optics (CLEO)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1364/CLEO_QELS.2017.FF1F.2","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
We have measured the terahertz responses of plasmon-phonon interaction in the topological insulator Bi2Se3 metamaterials. Upon photoexcitation, we observed transient phonon stiffening of ∼0.1 THz when the plasmon frequency is above the phonon energy.