{"id":444,"date":"2016-11-14T15:36:33","date_gmt":"2016-11-14T13:36:33","guid":{"rendered":"http:\/\/bela.phy.hr\/quantixlie\/?p=444"},"modified":"2016-12-24T19:22:04","modified_gmt":"2016-12-24T17:22:04","slug":"ab-initio-study-of-electronic-excitations-and-the-dielectric-function-in-molybdenum-disulfide-monolayer","status":"publish","type":"post","link":"http:\/\/bela.phy.hr\/quantixlie\/hr\/ab-initio-study-of-electronic-excitations-and-the-dielectric-function-in-molybdenum-disulfide-monolayer\/","title":{"rendered":"Ab initio study of electronic excitations and the dielectric function in molybdenum disulfide monolayer"},"content":{"rendered":"

<\/p>\n

ABSTRSCT: The propagator of the induced dynamically screened Coulomb interaction \"W^{ind} (Q,\omega ,z,z )\" is calculated for the \"MoS_2\" monolayer. The energy-loss rate of a point charge placed near the \"MoS_2\" monolayer is calculated (using the spatial resolution of the \"W^{ind}\" in the direction perpendicular to the \"MoS_2\" plane) and successfully compared with very recent electron-energy-loss spectroscopy measurements of Hong et al. [ J. Hong et al., Phys. Rev. B 93, 075440 (2016)<\/em> ]. The induced propagator \"W^{ind}\" , compared with its classical analogous propagator, is used to determine the effective dielectric function \"\epsilon _{eff} (\omega)\" of atomically thick crystals. It is shown that \"\epsilon _{eff } (\omega)\" extracted from \"W^{ind}\" is in good agreement with the dielectric function of the \"MoS_2\" extracted from the ellipsometry measurements. A recently proposed method for calculation of the dielectric tensor in quasi-two-dimensional crystals is used to calculate the parallel \"\epsilon\parallel (\omega)\" and perpendicular \"\epsilon\perp (\omega)\" dielectric functions in \"MoS_2\" , which are compared with some previous measurements and calculations.<\/p>\n

Vito Despoja, Zoran Rukelj, and Leonardo Maru\u0161i\u0107<\/p>\n

DOI: 10.1103\/PhysRevB.94.165446<\/a><\/p>\n

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

ABSTRSCT: The propagator of the induced dynamically screened Coulomb interaction is calculated for the monolayer. The energy-loss rate of a point charge placed near the monolayer is calculated (using the spatial resolution of the in the direction perpendicular to the plane) and successfully compared with very recent electron-energy-loss spectroscopy measurements […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[12,5],"tags":[],"_links":{"self":[{"href":"http:\/\/bela.phy.hr\/quantixlie\/hr\/wp-json\/wp\/v2\/posts\/444"}],"collection":[{"href":"http:\/\/bela.phy.hr\/quantixlie\/hr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bela.phy.hr\/quantixlie\/hr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bela.phy.hr\/quantixlie\/hr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/bela.phy.hr\/quantixlie\/hr\/wp-json\/wp\/v2\/comments?post=444"}],"version-history":[{"count":21,"href":"http:\/\/bela.phy.hr\/quantixlie\/hr\/wp-json\/wp\/v2\/posts\/444\/revisions"}],"predecessor-version":[{"id":465,"href":"http:\/\/bela.phy.hr\/quantixlie\/hr\/wp-json\/wp\/v2\/posts\/444\/revisions\/465"}],"wp:attachment":[{"href":"http:\/\/bela.phy.hr\/quantixlie\/hr\/wp-json\/wp\/v2\/media?parent=444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bela.phy.hr\/quantixlie\/hr\/wp-json\/wp\/v2\/categories?post=444"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bela.phy.hr\/quantixlie\/hr\/wp-json\/wp\/v2\/tags?post=444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}