title: Far-infrared absorption of PbSe nanorods.
abstract: Measurements of the far-infrared absorption spectra of PbSe nanocrystals and nanorods are presented. As the aspect ratio of the nanorods increases, the Fröhlich sphere resonance splits into two peaks. We analyze this splitting with a classical electrostatic model, which is based on the dielectric function of bulk PbSe but without any free-carrier contribution. Good agreement between the measured and calculated spectra indicates that resonances in the local field factors underlie the measured spectra.
authors.affiliation: School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14850, United States. Bh73@cornell.edu
authors.forename: Byung-Ryool
authors.initials: BR
authors.lastname: Hyun
authors.forename: A C
authors.initials: AC
authors.lastname: Bartnik
authors.forename: Weon-Kyu
authors.initials: WK
authors.lastname: Koh
authors.forename: N I
authors.initials: NI
authors.lastname: Agladze
authors.forename: J P
authors.initials: JP
authors.lastname: Wrubel
authors.forename: A J
authors.initials: AJ
authors.lastname: Sievers
authors.forename: Christopher B
authors.initials: CB
authors.lastname: Murray
authors.forename: Frank W
authors.initials: FW
authors.lastname: Wise
mesh_terms: D007854:Lead / Q000737:chemistry*; D036103:Nanotechnology; D043942:Nanotubes / Q000737:chemistry*; D010316:Particle Size; D018036:Selenium Compounds / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013499:Surface Properties
chemical_list: D018036:Selenium Compounds; C088065:lead selenide; D007854:Lead