title: Orbital and charge-resolved polaron states in CdSe dots and rods probed by scanning tunneling spectroscopy.
abstract: Conduction electrons interact with lattice vibrations, leading to coupled electron-phonon states. This effect is of fundamental importance in understanding electron transport and energy relaxation in nanoscale systems. We report quantitative results on the electron-phonon coupling strength in CdSe quantum dots (QDs) and rods, obtained by low-temperature scanning tunneling microscopy. We resolve the polaron eigenstates arising from coupling of the electrons to longitudinal optical phonons. The electron-phonon coupling strength is dependent on the electron orbital symmetry, the number of added electrons, and the size and dielectric environment of the QD.
authors.affiliation: Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, University of Utrecht, PO Box 80000, 3508 TA Utrecht, The Netherlands.
authors.forename: Zhixiang
authors.initials: Z
authors.lastname: Sun
authors.forename: Ingmar
authors.initials: I
authors.lastname: Swart
authors.forename: Christophe
authors.initials: C
authors.lastname: Delerue
authors.forename: Daniël
authors.initials: D
authors.lastname: Vanmaekelbergh
authors.forename: Peter
authors.initials: P
authors.lastname: Liljeroth