title: Tuning the Dirac point position in Bi(2)Se(3)(0001) via surface carbon doping.
abstract: Angular resolved photoemission spectroscopy in combination with ab initio calculations show that trace amounts of carbon doping of the Bi_{2}Se_{3} surface allows the controlled shift of the Dirac point within the bulk band gap. In contrast to expectation, no Rashba-split two-dimensional electron gas states appear. This unique electronic modification is related to surface structural modification characterized by an expansion of the top Se-Bi spacing of ≈11% as evidenced by surface x-ray diffraction. Our results provide new ways to tune the surface band structure of topological insulators.
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany.
authors.forename: Sumalay
authors.initials: S
authors.lastname: Roy
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany.
authors.forename: H L
authors.initials: HL
authors.lastname: Meyerheim
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany and Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstraße 2, 04103 Leipzig, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Ernst
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Mohseni
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Tusche
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany and Donostia International Physics Center (DIPC), 20018 San Sebastián/Donostia, Spain.
authors.forename: M G
authors.initials: MG
authors.lastname: Vergniory
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany and Tomsk State University, 634050 Tomsk, Russia.
authors.forename: T V
authors.initials: TV
authors.lastname: Menshchikova
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany and Donostia International Physics Center (DIPC), 20018 San Sebastián/Donostia, Spain and Tomsk State University, 634050 Tomsk, Russia.
authors.forename: M M
authors.initials: MM
authors.lastname: Otrokov
authors.affiliation: Tomsk State University, 634050 Tomsk, Russia.
authors.forename: A G
authors.initials: AG
authors.lastname: Ryabishchenkova
authors.affiliation: Baku State University, General and Inorganic Chemistry Department, AZ1148 Baku, Azerbaijan.
authors.forename: Z S
authors.initials: ZS
authors.lastname: Aliev
authors.affiliation: Baku State University, General and Inorganic Chemistry Department, AZ1148 Baku, Azerbaijan.
authors.forename: M B
authors.initials: MB
authors.lastname: Babanly
authors.affiliation: Institute of Geology and Mineralogy SB RAS, 630090 Novosibirsk, Russia.
authors.forename: K A
authors.initials: KA
authors.lastname: Kokh
authors.affiliation: Institute of Semiconductor Physics SB RAS, and Novosibirsk State University, 630090 Novosibirsk, Russia.
authors.forename: O E
authors.initials: OE
authors.lastname: Tereshchenko
authors.affiliation: Donostia International Physics Center (DIPC), 20018 San Sebastián/Donostia, Spain and Departamento de Física de Materiales UPV/EHU, Centro de Física de Materiales CFM-MPC and Centro Mixto CSIC-UPV/EHU, 20080 San Sebastián/Donostia, Spain.
authors.forename: E V
authors.initials: EV
authors.lastname: Chulkov
authors.affiliation: Department für Geowissenschaften Ludwig-Maximilians Universität München, D-80333 München, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Schneider
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany and Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Kirschner